The Sierra Club Missouri Chapter is part of the National Sierra Club.

Our purpose is "to explore, enjoy and protect the wild places of the Earth; to practice and promote the responsible use of the Earth's ecosystems and resources; to educate and enlist humanity to protect and restore the quality ofthe natural and human environment; and to use all lawful means to carry out these objectives."

Decisions about the actions of our chapter are made by an elected volunteer Executive Committee. All Sierra Club members in the state of Missouri are invited to run for the Executive Committee and to vote in the election.