| CW Resources Inc | New Britain | 501(c)(3) | 1965 | $125.6 million | $66.8 million | 2025-06 |
| Goodwill of Western and Northern Connecticut Inc | Bridgeport | 501(c)(3) | 1957 | $57.4 million | $80.3 million | 2024-12 |
| The Workplace Inc | Bridgeport | 501(c)(3) | 1984 | $39.5 million | $10.6 million | 2025-06 |
| Capital Workforce Partners Inc | Hartford | 501(c)(3) | 1980 | $28.2 million | $7.9 million | 2025-06 |
| Connecticut Center for Advanced Technology Inc | East Hartford | 501(c)(3) | 2005 | $21.9 million | $23.8 million | 2024-12 |
| Marc Inc of Manchester | Manchester | 501(c)(3) | 1953 | $16.6 million | $10.1 million | 2025-06 |
| Eastern Connecticut Workforce Investment Board Inc | Franklin | 501(c)(3) | 1985 | $16.4 million | $3.5 million | 2025-06 |
| Lumibility Inc | Westbrook | 501(c)(3) | 1960 | $16.1 million | $13.2 million | 2025-06 |
| Career Resources Inc | Bridgeport | 501(c)(3) | 1997 | $16 million | $9.8 million | 2025-06 |
| American Federation of State County & Municipal Employees | New Britain | 501(c)(5) | 1957 | $11.6 million | $6 million | 2024-12 |
| Marrakech Incorporated | Woodbridge | 501(c)(3) | 1972 | $10.4 million | $17.7 million | 2025-06 |
| Project Genesis Incorporated | Willimantic | 501(c)(3) | 1992 | $8.6 million | $12.5 million | 2025-06 |
| RW Solutions Inc | New Britain | 501(c)(3) | 2025 | $7.9 million | $3.7 million | 2025-06 |
| American Federation of Teachers | Rocky Hill | 501(c)(5) | 1945 | $7.6 million | $6.9 million | 2025-06 |
| Laborers International Union of North America | Hartford | 501(c)(5) | 1968 | $7.1 million | $4 million | 2025-12 |
| Association for Community Organization and Resource Developm | Wallingford | 501(c)(3) | 1986 | $6.4 million | $5.1 million | 2025-06 |
| Operating Engineers Local 478 Apprenticeship Training & Skill Im | Hamden | 501(c)(3) | 1973 | $6 million | $12.7 million | 2024-12 |
| Prea Foundation Inc | Hartford | 501(c)(3) | 2018 | $5.8 million | $39.1 million | 2025-12 |
| Kuhn Employment Opportunities Inc | Meriden | 501(c)(3) | 1964 | $4.4 million | $2.2 million | 2025-06 |
| Opportunity Works Connecticut Inc | Vernon Rockville | 501(c)(3) | 2010 | $4 million | $3 million | 2025-06 |
| Abilities Without Boundries Inc | Cheshire | 501(c)(3) | 1979 | $3.6 million | $1.3 million | 2025-06 |
| American Federation of Teachers | Rocky Hill | 501(c)(5) | 1967 | $3.3 million | $3.3 million | 2025-06 |
| Connecticut Construction Industries Association Inc | Wethersfield | 501(c)(6) | 1957 | $3 million | $6.3 million | 2025-12 |
| Buckingham Community Services Inc | East Lyme | 501(c)(3) | 1990 | $2.9 million | $2.1 million | 2025-06 |
| Boilermakers Northeast Area Apprenticeship Trust | East Hartford | 501(c)(3) | 2024 | $2.5 million | $7.7 million | 2025-12 |
| Community Vocational Services Incorporated | Waterford | 501(c)(3) | 1994 | $2.3 million | $1.1 million | 2025-06 |
| Congress of Connecticut Community Colleges | Hartford | 501(c)(5) | 2025 | $2.3 million | $2.3 million | 2025-06 |
| Service Professionals Independent Union Local 726 | Danbury | 501(c)(5) | 2001 | $1.9 million | $7.8 million | 2025-09 |
| Havenly | New Haven | 501(c)(3) | 2020 | $1.7 million | $453,229 | 2025-12 |
| Prime Time House Inc | Torrington | 501(c)(3) | 1987 | $1.4 million | $1.3 million | 2025-06 |
| Ubc & Ja Local 326 | Wallingford | 501(c)(5) | 2019 | $955,901 | $790,226 | 2025-06 |
| Business Industry Foundation of Middlesex County Inc | Middletown | 501(c)(3) | 1987 | $718,595 | $1.1 million | 2025-06 |
| Uchc-Aaup | Farmington | 501(c)(5) | 2014 | $694,062 | $1.6 million | 2024-12 |
| L U No 488 Ibew Joint Apprenticeship Training Fund | Monroe | 501(c)(5) | 1978 | $693,194 | $1.4 million | 2025-12 |
| Manufacturing and Technical Community Hub Match Inc | New Haven | 501(c)(3) | 2024 | $667,943 | $1.4 million | 2024-12 |
| Recovery Community Development Inc | Bridgeport | 501(c)(3) | 2013 | $629,797 | $1.9 million | 2024-12 |
| Team Woofgang & Co Inc | Fairfield | 501(c)(3) | 2017 | $629,473 | $687,526 | 2025-06 |
| Odyssey Family Executive Center of South Norwalk Inc | Norwalk | 501(c)(3) | 2019 | $621,259 | $188,893 | 2025-12 |
| Utility Workers Union of America Afl Cio | Milford | 501(c)(5) | 1944 | $609,548 | $821,096 | 2024-12 |
| Bristol Works Inc | Bristol | 501(c)(3) | 2022 | $608,398 | $1.2 million | 2024-12 |
| Coffee for Good Inc | Greenwich | 501(c)(3) | 2020 | $604,671 | $1.1 million | 2025-06 |
| Minority Construction Council Inc | Hartford | 501(c)(3) | 2006 | $584,252 | $206,290 | 2023-12 |
| Connecticut Human Resource Council | Berlin | 501(c)(6) | 1999 | $550,289 | $186,448 | 2025-12 |
| Sheet Metal Workers Local No 40 Labor Management Cooperation Trust | Rocky Hill | 501(c)(5) | 1999 | $541,799 | $2.3 million | 2024-12 |
| American Postal Workers Union | North Haven | 501(c)(5) | 1973 | $521,220 | $472,723 | 2025-12 |
| American Federation of Teachers | New London | 501(c)(5) | 1945 | $448,117 | $351,735 | 2024-12 |
| International Hartford LTD | Hartford | 501(c)(3) | 2014 | $447,943 | $391,909 | 2025-06 |
| Connecticut Federation of School Administrators | Newington | 501(c)(5) | 2005 | $418,590 | $322,978 | 2025-06 |
| Westport Book Sale Ventures Inc | Westport | 501(c)(3) | 2019 | $390,404 | $187,849 | 2025-06 |
| Waterbury Opportunities Industrialization Inc | Waterbury | 501(c)(3) | 1974 | $389,773 | $1.1 million | 2025-12 |
| A&B It S All Good Inc | Westport | 501(c)(3) | 2023 | $381,521 | $133,929 | 2025-12 |
| Connecticut Alliance of City Police | New Haven | 501(c)(5) | 2015 | $380,862 | $573,166 | 2025-12 |
| Milford Police Benevolent Assoc Inc | Milford | 501(c)(5) | 2009 | $347,471 | $471,984 | 2025-12 |
| Swag Custom Rides Inc | New Britain | 501(c)(3) | 2015 | $344,620 | $858,691 | 2022-12 |
| Connecticut Alliance of City Police | Waterbury | 501(c)(5) | 2015 | $336,708 | $540,977 | 2024-12 |
| Cagv-Education Fund Inc | New Fairfield | 501(c)(3) | 1997 | $328,483 | $413,239 | 2024-12 |
| Save A Suit Inc | Bethel | 501(c)(3) | 2011 | $321,014 | $421,498 | 2024-12 |
| Association of Commuter Rail Employees Acre | New Haven | 501(c)(5) | 2001 | $299,185 | $162,720 | 2024-12 |
| International Association of Heat & Frost Insulators & Allied Workers | Wallingford | 501(c)(5) | 2017 | $289,669 | $1.3 million | 2025-12 |
| International Union United Auto Aerospace & Agricultural Workers | Stamford | 501(c)(5) | 1941 | $279,379 | $401,107 | 2025-12 |
| Hartford Principals & Supervisors A | West Hartford | 501(c)(5) | 2015 | $253,187 | $210,572 | 2026-06 |
| Amalgamated Transit Union | E Hartfurd | 501(c)(5) | 1940 | $218,926 | $148,951 | 2025-12 |
| Connecticut Alliance of City Police | Danbury | 501(c)(5) | 2015 | $216,818 | $145,939 | 2024-12 |
| Greater New Haven Opportunities Ind Center Inc | New Haven | 501(c)(3) | 1990 | $180,124 | $6,095 | 2024-06 |
| West Hartford Police Officers Association | West Hartford | 501(c)(5) | 2005 | $173,428 | $308,204 | 2024-12 |
| Sound Life Connections | Guilford | 501(c)(3) | 2023 | $162,868 | $67,345 | 2024-12 |
| Greater Bridgeport Opportunities Industrialization Center Inc | Bridgeport | 501(c)(3) | 1999 | $150,000 | $131,105 | 2025-06 |
| Seniors Job Bank Inc | West Hartford | 501(c)(3) | 2013 | $129,825 | $346,139 | 2024-12 |
| Connecticut Quarter Horse Association Inc | Broad Brook | 501(c)(5) | 2018 | $126,650 | $22,846 | 2025-12 |
| I Care Outreach | Bridgeport | 501(c)(3) | 2017 | $116,366 | $51,382 | 2024-12 |
| Enfield Police Employee Association | Enfield | 501(c)(5) | 2018 | $111,935 | $351,084 | 2025-12 |
| Sheet Metal Workers Local 17 NH Training Fund | Wallingford | 501(c)(5) | 2010 | $103,157 | $894,978 | 2024-12 |
| American Federation of Teachers | Northford | 501(c)(5) | 1967 | $101,616 | $57,084 | 2025-08 |
| Manchester Police Officers Association | Manchester | 501(c)(5) | 2014 | $101,401 | $396,212 | 2026-06 |
| Bristol Police Union | Bristol | 501(c)(5) | 2016 | $100,321 | $253,569 | 2025-12 |
| Hartford Educational Support Personnel | Hartford | 501(c)(5) | 2014 | $97,531 | $152,101 | 2025-06 |
| Built With Our Hands Inc | Rocky Hill | 501(c)(3) | 2021 | $87,197 | $44,401 | 2025-06 |
| Journey 2 Success | Rockfall | 501(c)(3) | 2025 | $80,652 | $4,114 | 2025-12 |
| American Federation of Teachers | Bozrah | 501(c)(5) | 1967 | $79,692 | $1,473 | 2025-06 |
| Connecticut Federation of School Administrators | New Britain | 501(c)(5) | 2005 | $76,947 | $118,223 | 2025-06 |
| American Federation of Teachers | New Britain | 501(c)(5) | 1967 | $74,643 | $19,880 | 2025-08 |
| Law Enforcement Alliance of Southington | Southington | 501(c)(5) | 2010 | $72,977 | $146,200 | 2025-12 |
| Connecticut Organization of Public Safety Employees Connecticut | Clinton | 501(c)(4) | 2007 | $72,535 | $6,049 | 2025-12 |
| Greenwich Municipal Employees Association Inc | Greenwich | 501(c)(5) | 1990 | $69,792 | $408,207 | 2025-06 |
| Berlin Police Union Fraternal Order of Police Lodge 56 | Berlin | 501(c)(5) | 2016 | $69,415 | $91,372 | 2025-12 |
| Naugatuck Non Certified Employees Union | Naugatuck | 501(c)(5) | 2019 | $66,153 | $17,292 | 2025-06 |
| American Federation of Teachers | West Hartford | 501(c)(5) | 1967 | $58,315 | $123,028 | 2025-08 |
| Hartford Federation of School Secretaries HFT Local 1018 C | Hartford | 501(c)(5) | 2013 | $56,446 | $46,429 | 2025-06 |
| Naugatuck Fire Fighters Local 1219 International Association of Fire | Naugatuck | 501(c)(5) | 2024 | $55,955 | $69,053 | 2025-12 |
| Local 1622 of the Amalgamated Transit Union | Danbury | 501(c)(5) | 2026 | $51,444 | $111,690 | 2024-06 |
| Weston Police Benevolent Association Incorporated | Weston | 501(c)(5) | 2022 | $51,294 | $248,643 | 2024-12 |
| Ansonia Police Union Local 913 | Ansonia | 501(c)(5) | 2024 | $45,300 | $42,348 | 2025-12 |
| American Federation of Teachers | Moodus | 501(c)(5) | 1967 | $38,601 | $25,628 | 2024-12 |
| Sikorsky Aircraft Security Officers Association | Stratford | 501(c)(5) | 2017 | $35,482 | $58,259 | 2025-03 |
| American Federation of Teachers | Willimantic | 501(c)(5) | 1967 | $34,141 | $34,104 | 2025-06 |
| Center for Advocacy Research & Education of Connecticut Inc | Hartford | 501(c)(3) | 1996 | $31,123 | $9.2 million | 2025-12 |
| Connecticut Alliance of City Police | Waterbury | 501(c)(5) | 2015 | $17,500 | $29,066 | 2024-12 |
| The Connecticut Orthopedic Foundation Inc | Hartford | 501(c)(3) | 1998 | $16,890 | $24,064 | 2025-12 |
| American Federation of Technical Engineers | Stratford | 501(c)(4) | 2015 | $14,713 | $91,305 | 2023-12 |
| Watertown Police Benevolent Association Inc | Watertown | 501(c)(4) | 1999 | $14,610 | $60,357 | 2025-12 |
| American Federation of Government Empoyees Local 2105 | Groton | 501(c)(5) | 2023 | $8,574 | $81,279 | 2025-12 |
| Snet Retirees Association | Middlebury | 501(c)(4) | 2000 | $7,210 | $72,999 | 2025-12 |
| Quinnipiac Charitable Trust Inc | Wallingford | 501(c)(3) | 2003 | $6,091 | $66,427 | 2025-02 |
| Uniroyal Non-Union Retiree Medical Benefit Steering Committee Inc | Naugatuck | 501(c)(5) | 2010 | $142 | $23,428 | 2025-12 |
| Abraham and Mildred Goldstein Charitable Trust 101494 | New Milford | 501(c)(3) | 1995 | | $12 million | 2025-12 |
| Accesspoint Workforce | Hartford | 501(c)(3) | 2026 | | | |
| Aetna Retirees Association Inc | East Hartford | 501(c)(5) | 2005 | $0 | $0 | 2026-04 |
| American Federation of State County & Municipal Employees | Stamford | 501(c)(5) | 1957 | $0 | $0 | 2025-12 |
| American Federation of State County & Municipal Employees | Hamden | 501(c)(5) | 1957 | $0 | $0 | 2025-12 |
| American Federation of State County & Municipal Employees | New Britain | 501(c)(5) | 1957 | $0 | $0 | 2023-12 |
| American Federation of State County & Municipal Employees | Watertown | 501(c)(5) | 1957 | $0 | $0 | 2025-12 |
| American Federation of State County & Municipal Employees | Dayville | 501(c)(5) | 1957 | $0 | $0 | 2024-12 |
| American Federation of State County & Municipal Employees | Bristol | 501(c)(5) | 1957 | $0 | $0 | 2025-12 |
| American Federation of State County & Municiple Employees | Groton | 501(c)(5) | 1957 | $0 | $0 | 2024-12 |
| American Federation of Teachers | East Hartford | 501(c)(5) | 1967 | $0 | $0 | 2026-01 |
| American Federation of Teachers | New London | 501(c)(5) | 1967 | $0 | $0 | 2025-12 |
| American Federation of Teachers | Middletown | 501(c)(5) | 1967 | $0 | $0 | 2026-01 |
| American Federation of Teachers | Durham | 501(c)(5) | 1967 | $0 | $0 | 2026-01 |
| American Federation of Teachers | Cromwell | 501(c)(5) | 1967 | $0 | $0 | 2026-01 |
| American Federation of Teachers | Bozrah | 501(c)(5) | 1945 | $0 | $0 | 2025-06 |
| American Federation of Teachers | West Simsbury | 501(c)(5) | 1945 | $0 | $0 | 2025-06 |
| American Legion | Riverton | 501(c)(19) | 1946 | $0 | $0 | 2025-12 |
| Associate Staff Organization of the Connecticut Education Assoc | Hartford | 501(c)(5) | 2017 | $0 | $0 | 2025-08 |
| Association for Persons in Supported Employment | Bethel | 501(c)(6) | 2024 | $0 | $0 | 2026-03 |
| Association of Civilian Technicians Inc | Groton | 501(c)(5) | 2003 | $0 | $0 | 2025-12 |
| Association of Council 4 Employees | New Britain | 501(c)(5) | 1999 | $0 | $0 | 2025-12 |
| Association of Court Security Officers-Connecticut | New Haven | 501(c)(5) | 2000 | $0 | $0 | 2025-12 |
| Association of Madison Administrators | Madison | 501(c)(5) | 2016 | $0 | $0 | 2026-06 |
| Badeyeni | Hamden | 501(c)(3) | 2026 | | | |
| Beagary Charitable Trust | Brooklyn | 501(c)(3) | 1996 | | $19.9 million | 2025-12 |
| Berlin Educational Clerical Employees Union | Berlin | 501(c)(5) | 2020 | $0 | $0 | 2026-06 |
| Bethel Administrators Association | Bethel | 501(c)(5) | 2014 | $0 | $0 | 2024-12 |
| Biyc Incorporated | Bridgeport | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Bloom Haven Inc | New Haven | 501(c)(3) | 2025 | | | |
| Branford Association of Support Staff | Branford | 501(c)(5) | 2011 | $0 | $0 | 2025-10 |
| Brotherhood of Railroad Signalmen | Greenwich | 501(c)(5) | 1941 | $0 | $0 | 2025-12 |
| Business Education Initiative of Trumbull Inc | Trumbull | 501(c)(3) | 1999 | $0 | $0 | 2025-09 |
| Business Insurance Foundation Inc | Greenwich | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Candullz Cleaning From the Heart Inc | New Haven | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Catrala of Connecticut Inc | Windsor Locks | 501(c)(6) | 2025 | $0 | $0 | 2024-12 |
| Central Connecticut Paralegal Association Inc | Hartford | 501(c)(6) | 1987 | $0 | $0 | 2025-06 |
| Ceuimeui Employees Staff Association Inc | Plantsville | 501(c)(5) | 2010 | $0 | $0 | 2026-08 |
| Cheshire Educational Secretaries and Technicians United | Cheshire | 501(c)(5) | 2019 | $0 | $0 | 2026-06 |
| Cheshire Federation of School Administratiors | Cheshire | 501(c)(5) | 2017 | $0 | $0 | 2025-06 |
| Cheshire Police Union | Cheshire | 501(c)(5) | 2016 | $0 | $0 | 2025-06 |
| City of Groton Local 1964 I A F F | Groton | 501(c)(5) | 2019 | $0 | $0 | 2026-03 |
| Civil Service Employees Association | Stamford | 501(c)(5) | 1970 | $0 | $0 | 2025-09 |
| Cmta Foundation Inc | Essex | 501(c)(3) | 2018 | $0 | $0 | 2026-06 |
| Connecticut Administrators of Program for English Language Learn | New Haven | 501(c)(3) | 2026 | | | |
| Connecticut Alliance of City Police | Thomaston | 501(c)(5) | 2015 | $0 | $0 | 2025-12 |
| Connecticut Association of School Administrators Inc | Stratford | 501(c)(5) | 2017 | $0 | $0 | 2026-06 |
| Connecticut Dressage & Combined Training Association Inc | Stratford | 501(c)(3) | 1992 | $0 | $0 | 2025-12 |
| Connecticut Education Association | Norwich | 501(c)(5) | 1971 | $0 | $0 | 2026-06 |
| Connecticut Education Association | Groton | 501(c)(5) | 2014 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Norwalk | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Newtown | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | Derby | 501(c)(5) | 2005 | $0 | $0 | 2024-06 |
| Connecticut Federation of School Administrators | Moodus | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | East Hartford | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | East Hartford | 501(c)(5) | 2005 | | | |
| Connecticut Federation of School Administrators | Griswold | 501(c)(5) | 2005 | $0 | $0 | 2024-06 |
| Connecticut Federation of School Administrators | New Fairfield | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Beacon Falls | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | Shelton | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Trumbull | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | Torrington | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | Woodbridge | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | N Branford | 501(c)(5) | 2005 | $0 | $0 | 2024-06 |
| Connecticut Federation of School Administrators | Meriden | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Columbia | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Litchfield | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Enfield | 501(c)(5) | 2005 | | | |
| Connecticut Federation of School Administrators | Niantic | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | Brooklyn | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Putnam | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | Hebron | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | N Stonington | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Plainfield | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | Bristol | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | Cromwell | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | Oakdale | 501(c)(5) | 2005 | $0 | $0 | 2025-06 |
| Connecticut Federation of School Administrators | N Grosvenordl | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Federation of School Administrators | Marlborough | 501(c)(5) | 2005 | $0 | $0 | 2026-06 |
| Connecticut Organization for Public Safety C O P S Stonington Police | Pawcatuck | 501(c)(5) | 2012 | $0 | $0 | 2022-12 |
| Connecticut State Police Commission Ed Officers Association Inc | Colchester | 501(c)(3) | 2025 | | | |
| Connecticut Workforce Development Council Inc | New Haven | 501(c)(3) | 1997 | $0 | $33,232 | 2025-06 |
| Csea Social Activities Committee | Hartford | 501(c)(5) | 2025 | $0 | $0 | 2025-06 |
| Csea Staff Union | Hartford | 501(c)(5) | 2026 | $0 | $0 | 2026-06 |
| Dripability | Southbury | 501(c)(3) | 2026 | | | |
| East Haven Administrators and Supervisors Association Incorporat | East Haven | 501(c)(5) | 2020 | $0 | $0 | 2025-06 |
| Eastern Connecticut Public Safety Independent Union | Norwich | 501(c)(5) | 2019 | $0 | $0 | 2023-03 |
| Excellitnow Foundation | Meriden | 501(c)(3) | 2026 | | | |
| FFLD Schools Cust and Maint Unit 1779 | Stratford | 501(c)(5) | 2020 | $0 | $0 | 2025-12 |
| Friends of the Plainville Public Library Inc | Plainville | 501(c)(3) | 1996 | $0 | $0 | 2026-04 |
| From Farms To Incubators | Branford | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Gathering Beans Inc | Milford | 501(c)(3) | 2026 | | | |
| Greater Hartford Legal Aid Attorney S Union | Hartford | 501(c)(5) | 2026 | | | |
| Guilford Employees Association | Guilford | 501(c)(5) | 2003 | $0 | $0 | 2024-12 |
| Hamden Regional Chamber Or Commerce Foundation Inc | Hamden | 501(c)(3) | 2026 | | | |
| Hero To Hero Inc | Cheshire | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Inclusionbridge Inc | Norwalk | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Inclusive Industries Inc | Darien | 501(c)(3) | 2025 | $0 | $1 | 2024-12 |
| Industrial Workers of the World | New London | 501(c)(5) | 2013 | $0 | $0 | 2026-06 |
| Infinite Horizons Clubhouse Inc | West Hartford | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Institute for Life Coping Skills Incorporated | Greenwich | 501(c)(3) | 1974 | $0 | $0 | 2025-12 |
| International Association of Fire Fighters | West Haven | 501(c)(5) | 1959 | $0 | $0 | 2025-12 |
| International Association of Fire Fighters | Waterford | 501(c)(5) | 1959 | $0 | $0 | 2025-06 |
| International Association of Fire Fighters | Mashantucket | 501(c)(5) | 2025 | $0 | $0 | 2025-09 |
| International Association of Sheet Metal Air Rail & Transportation | Hamden | 501(c)(5) | 2015 | $0 | $0 | 2025-12 |
| International Association of Sheet Metal Air Rail & Transportation | North Haven | 501(c)(5) | 2015 | $0 | $0 | 2025-12 |
| International Association of Sheet Metal Air Rail & Transportation | Branford | 501(c)(5) | 2015 | $0 | $0 | 2025-12 |
| International Association of Sheet Metal Air Rail & Transportation | Naugatuck | 501(c)(5) | 2015 | $0 | $0 | 2025-12 |
| International Brotherhood of Police Officers Local 458 | Simsbury | 501(c)(5) | 2023 | $0 | $0 | 2026-07 |
| International Chemical Workers Union Council Ufcw | New Haven | 501(c)(5) | 2016 | $0 | $0 | 2026-06 |
| International Federation of Professional & Technical Engineers | Newtown | 501(c)(5) | 2021 | $0 | $0 | 2025-12 |
| Intl Assoc of Sheet Metal Air Rail & Transportation 679 TD | Pomfret Center | 501(c)(5) | 2015 | $0 | $0 | 2025-12 |
| L1467CT Southbury CT Police Dept Em | Southbury | 501(c)(5) | 2013 | $0 | $0 | 2026-06 |
| Liberty Bank Foundation | Middletown | 501(c)(3) | 1997 | | $46.8 million | 2025-12 |
| Local Nos 35 & 90 Adt Security Systems Inc | Wallingford | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Louis F and Mary A Tagliatela Foundation Inc | New Haven | 501(c)(3) | 1997 | | $3.8 million | 2025-12 |
| M Bonnie Axthelm Charitable Foundation | Westport | 501(c)(3) | 1997 | | $161,726 | 2025-12 |
| Mack Snacks Inc | N Stonington | 501(c)(3) | 2024 | $0 | $0 | 2023-12 |
| Middlesex County Extension Council Incorporated | Haddam | 501(c)(3) | 1962 | $0 | $0 | 2025-12 |
| Middletown Managers Professional Association | Middletown | 501(c)(5) | 2022 | $0 | $0 | 2023-06 |
| Midstate Chamber of Commerce Founda Tion Inc | Meriden | 501(c)(3) | 2026 | | | |
| Milford Connecticut Police Department Employees Police Union | Milford | 501(c)(5) | 2025 | | | |
| Mystic Career Firefighters Associat Ion Inc | Mystic | 501(c)(5) | 2026 | $0 | $0 | 2025-12 |
| Nappesoul Inc | New Haven | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| National Association of Government Employees | Cromwell | 501(c)(5) | 1973 | $0 | $0 | 2025-12 |
| National Association of Negro Business and Professional Womens C | New Haven | 501(c)(3) | 1998 | $0 | $0 | 2026-06 |
| National Association of Postal Supv BR 47 | Danbury | 501(c)(5) | 2014 | $0 | $0 | 2024-12 |
| Newtown Emergency Communications and Clerical Employees Union | Newtown | 501(c)(5) | 2024 | $0 | $0 | 2025-12 |
| Next Step Generation Inc | Bridgeport | 501(c)(3) | 2019 | $0 | $0 | 2026-06 |
| Norwich School Administrators Assoc | Norwich | 501(c)(5) | 2016 | $0 | $0 | 2025-06 |
| Nutmeg Independent Labor Union - Cheshire Town Hall Employees | Cheshire | 501(c)(5) | 2025 | $0 | $0 | 2025-12 |
| Orderup Inc | Danbury | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| People 1St Inc | Bridgeport | 501(c)(3) | 2020 | | $45,865 | 2023-12 |
| Portland Police Union Local 2693N | Portland | 501(c)(5) | 2014 | $0 | $0 | 2025-12 |
| Pound of Impact | Stamford | 501(c)(3) | 2025 | | | |
| Pro Union Slate Inc | Bethel | 501(c)(4) | 2022 | $0 | $0 | 2025-12 |
| Prospect Police Union | Prospect | 501(c)(5) | 2018 | $0 | $0 | 2025-12 |
| Redress Inc | Greenwich | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Regional School District 19 Administrators Association | Storrs | 501(c)(5) | 2022 | $0 | $0 | 2025-06 |
| Regional School District No 17support Services Association Inc | Madison | 501(c)(5) | 2025 | $0 | $0 | 2025-06 |
| Returning Citizens Training | Bridgeport | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Rocky Hill Administrators Association | Rocky Hill | 501(c)(5) | 2022 | $0 | $0 | 2025-06 |
| Seat Foundation Inc | New Haven | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Somers Educational Secretary Assoc | Somers | 501(c)(5) | 2013 | $0 | $0 | 2025-06 |
| South Windsor Non-Supervisor Professional Employees Union | South Windsor | 501(c)(5) | 2023 | $0 | $0 | 2025-06 |
| South Windsor Police Union Inc | South Windsor | 501(c)(5) | 2018 | $0 | $0 | 2025-12 |
| Southington Administrators Association Inc | Southington | 501(c)(5) | 2017 | $0 | $0 | 2025-06 |
| Southington Clerical and Food Service Employees United - Nipseu | Southington | 501(c)(5) | 2022 | $0 | $0 | 2025-06 |
| Spectrum Vending Inc | Orange | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Stagehands Benevolent Association Local 84 | Glastonbury | 501(c)(5) | 2012 | $0 | $0 | 2025-12 |
| Stratford Administrators Association Inc | Stratford | 501(c)(5) | 2014 | $0 | $0 | 2025-06 |
| Stratford Cadets Inc | Stratford | 501(c)(3) | 2025 | $0 | $0 | 2024-12 |
| Sweeney Civil Construction Academy Inc | Hamden | 501(c)(3) | 2026 | | | |
| Teachers Association of Japanese Educational Institute of New Yorl | Portland | 501(c)(5) | 2019 | $0 | $0 | 2026-03 |
| The Balance Forward Initiative Inc | New Milford | 501(c)(3) | 2026 | | | |
| The Building & Construction Trades Council of Waterbury | Middletown | 501(c)(5) | 2009 | $0 | $0 | 2025-12 |
| The Musicians Association of Eastern CT Local 285-403 Afm | Colchester | 501(c)(5) | 2020 | $0 | $0 | 2025-12 |
| The Tradesbridge Network Inc | New Britain | 501(c)(3) | 2026 | | | |
| The Wallingford Management Union Local 424 Unit 17 | Wallingford | 501(c)(5) | 2018 | $0 | $0 | 2025-12 |
| Thomaston Administrators Assoc | Thomaston | 501(c)(5) | 2016 | $0 | $0 | 2026-06 |
| Tinaliah the One Who Perseveres Inc | New Haven | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Torrington Retired Fire and Police Officers Association | Torrington | 501(c)(5) | 2019 | $0 | $0 | 2025-09 |
| United Electrical Radio and Machine Workers of America | Yalesville | 501(c)(5) | 1944 | $0 | $0 | 2025-12 |
| United Electrical Radio and Machine Workers of America | New Haven | 501(c)(5) | 1944 | $0 | $0 | 2025-06 |
| United Public Service Employees Union Msa Local 424 Unit 97 | Milford | 501(c)(5) | 2018 | $0 | $0 | 2026-06 |
| United States Taekwondo Instructors Union Inc | Manchester | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Unturning Steel Incorporated | Quaker Hill | 501(c)(3) | 2024 | $0 | $0 | 2025-06 |
| Upptik Gives Inc | Guilford | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| VTB Wealth Foundation | Fairfield | 501(c)(3) | 2025 | | | |
| Vernon Police Association | Vernon Rockvl | 501(c)(5) | 2007 | $0 | $0 | 2025-12 |
| Vibe Innovations | Hamden | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Wallingford Electric Production and Clerical Union | Wallingford | 501(c)(5) | 2025 | $0 | $0 | 2025-12 |
| Waterbury Retired Educators Association | Waterbury | 501(c)(5) | 2003 | $0 | $0 | 2025-12 |
| Waterford Police Union Local 1948 Inc | Waterford | 501(c)(5) | 2010 | $0 | $0 | 2025-06 |
| West Haven Police Department Retired Officers Association | West Haven | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Wethersfield Police Union | Wethersfield | 501(c)(5) | 2023 | $0 | $0 | 2024-12 |
| Workforce Center of Excellence Inc | Derby | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |