Data / Nonprofits / Tennessee / Knoxville / Environment
Environment nonprofits in Knoxville, TN: 32 registered with the IRS
32 environment nonprofits are registered with the IRS in Knoxville, TN, 32 of them 501(c)(3) charities; the 17 that report revenue took in $20.4 million. The largest by revenue: Southern Alliance for Clean Energy ($5.4 million), Saving Nature Inc ($4.8 million), Ijams Nature Center Inc ($2.6 million).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Southern Alliance for Clean Energy | 501(c)(3) | 1985 | $5.4 million | $12 million | 2025-12 |
| Saving Nature Inc | 501(c)(3) | 2019 | $4.8 million | $1.9 million | 2025-12 |
| Ijams Nature Center Inc | 501(c)(3) | 1978 | $2.6 million | $4.9 million | 2024-12 |
| East Tennessee Clean Fuels Coalition | 501(c)(3) | 2026 | $2.4 million | $1.1 million | 2025-09 |
| Conservation Fisheries Inc | 501(c)(3) | 1993 | $1.1 million | $1.1 million | 2025-09 |
| Knoxville Botanical Gardens and Arboretum | 501(c)(3) | 2002 | $1 million | $3 million | 2024-12 |
| Statewide Organizing for Community Empowerment Resource Project | 501(c)(3) | 1984 | $844,141 | $541,691 | 2024-12 |
| Trees Knoxville | 501(c)(3) | 2017 | $533,475 | $144,060 | 2025-12 |
| Keep the Tennessee River Beautiful | 501(c)(3) | 2018 | $453,131 | $255,789 | 2024-06 |
| Keep Knoxville Beautiful Inc | 501(c)(3) | 1980 | $412,096 | $413,995 | 2025-06 |
| Tennessee Advanced Energy Business Council | 501(c)(3) | 2014 | $378,450 | $78,918 | 2024-12 |
| Tennessee Federation of Garden Clubs Inc | 501(c)(3) | 1970 | $134,331 | $833,035 | 2026-03 |
| Middle-West Tennessee Clean Fuels Coalition | 501(c)(3) | 2011 | $109,288 | $97,141 | 2025-09 |
| Friends of Seven Islands State Birding Park Inc | 501(c)(3) | 2015 | $99,546 | $152,732 | 2025-12 |
| Knoxville Garden Club Inc | 501(c)(3) | 1969 | $90,115 | $266,534 | 2025-06 |
| Tennessee Weed Science Society | 501(c)(3) | 2014 | $79,950 | $36,738 | 2025-12 |
| Smoky Mountains Hiking Club Incorporated | 501(c)(3) | 2000 | $72,044 | $656,318 | 2025-12 |
| Build for Bees | 501(c)(3) | 2021 | $8,199 | 2025-12 | |
| Cadeau Vert | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Coal Creek Watershed Foundation Inc | 501(c)(3) | 2001 | $181,956 | 2025-12 | |
| Cultivate Wholeness | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| French Broad Preservation Association Inc | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Friends of Rural Mount Inc | 501(c)(3) | 2026 | |||
| Friends of the Arboretum at Racheff | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Knox County Master Gardeners | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Knoxville Bonsai Society | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Knoxville Dahlia Society | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Knoxville Gem & Mineral Society Inc | 501(c)(3) | 2011 | $0 | $0 | 2023-12 |
| Save Our Smokies Inc | 501(c)(3) | 2021 | $0 | $0 | 2026-04 |
| Seven Islands Foundation Inc | 501(c)(3) | 2000 | $3.4 million | 2025-12 | |
| Tennessee Solar Energy Association | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Water Quality Forum | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
Other causes in Knoxville, TN
- Religion-related 301
- Education 279
- Human services 196
- Recreation and sports 147
- Arts, culture and humanities 136
- Philanthropy, voluntarism and grantmaking foundations 111
- Community improvement and capacity building 91
- Health care 69
- Youth development 67
- Animal-related 44
- Mental health and crisis intervention 42
- Public and societal benefit 36
- Housing and shelter 35
- International, foreign affairs and national security 32
- Mutual and membership benefit 26
- Food, agriculture and nutrition 25
- Diseases, disorders and medical disciplines 23
- Employment 18
- Crime and legal-related 16
- Medical research 15
- Civil rights, social action and advocacy 15
- Public safety, disaster preparedness and relief 14
- Science and technology 13
- Social science 5
Every nonprofit in Knoxville, TN · Environment nonprofits across the state · Nonprofits in every city of the state
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.