An environmental organization is an organization coming out of the conservation or environmental movements that seeks to protect, analyse or monitor the environment against misuse or degradation from human forces.

In this sense the environment may refer to the biophysical environment or the natural environment. The organization may be a charity, a trust, a non-governmental organization, a governmental organization or an intergovernmental organization. Environmental organizations can be global, national, regional or local. Some environmental issues that environmental organizations focus on include pollution, plastic pollution, waste, resource depletion, human overpopulation and climate change.

Many states have agencies devoted to monitoring and protecting the environment:

These organizations are involved in environmental management, lobbying, advocacy, and/or conservation efforts:

These organizations are involved in environmental management, lobbying, advocacy, and/or conservation efforts at the national level: