This has multiple meanings. You are probably looking for information on one of the following:
Atheist Community of Tulsa - Community and support group for Tulsa area atheists, agnostics, free-thinkers, humanists, etc.
This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. If an article link referred you here, you might want to go back and fix it to point directly to the intended page.