List of environmental and conservation organizations in the United States

Environmental and conservation organizations in the United States have been formed to help protect the environment, habitats, flora, and fauna on federally owned land, on private land, within coastal limits, in-state conservation areas, in-state parks and in locally governed municipalities. In addition, some organizations utilize the court system in states and at the federal level to enforce environmental and conservation regulations and laws. Most organizations operate as nonprofits. The revenue of these organizations is used to achieve their goals rather than distributing them as profit or dividends.
After a nonprofit environmental and conservation organization has been established at the state level, it typically applies for tax exempt status with U.S. federal income tax. Failure to maintain operations in conformity to the laws may result in an organization losing its tax exempt status. Individual states and localities offer nonprofits exemptions from other taxes such as sales tax or property tax. An environmental and conservation organization that is tax exempt is required to file annual financial reports (IRS Form 990). These tax forms are required to be made available to the public.