Earth Month is Here! Take Action with Your Fellow Oklahomans!
Join the Sierra Club Oklahoma Chapter this April to protect our land, water, and communities from corporate overreach and forever chemicals.
RSVP for Earth Day at the Capitol - April 22
Visit our legislators at the State Capitol on Earth Day. Join our orientation, use our talking points, and enjoy our comfort station with lots of great food, and friends to support you. Follow this link (April 22) for more info and to register. Hope to see you there!
Legislative Action
URGENT: Tell Your Representative to Vote NO on the SB 1439 "Polluter Immunity" Bill
Sign Up for Weekly Legislative Action Alerts
OK 2026 Active High Priority Bills
Invest in the Work!
Event Calendar
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Multiple events (map only)Become a Member
There's strength in numbers, so join today to help shape tomorrow's sustainable economy in our state.
Contact Us
Find out more about Oklahoma Sierra Club's activities across the state and in your very own community! We have OKSC Groups in Oklahoma City, Norman, and Tulsa, as well as OKSC Student Sections at both of our major state universities, OU and OSU.
Connect to us via Facebook.
Mailing Address:
Oklahoma Sierra Club: P.O. Box 60644, Oklahoma City, OK 73146-0644
Tulsa address: PO Box 52183, Tulsa, OK 74152