The story
Since 1986, BATS helped create and define a unique San Francisco style of long-form improvisation: a single-story 2-hour show, complete with intermission.
From Wikipedia’s article on BATS Improv, shared under CC BY-SA 4.0.3
Private company
BATS Improv (formerly known as "Bay Area Theatresports") is a non-profit improvisational theatre company in San Francisco. Founded in 1986, their unique style of acting-based improvisational theatre is well known in improv circles around the world. BATS is the largest improvisational theatre company and school in Northern California.2 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
See how the biggest companies compare on our leaderboards

BATS Improv (formerly known as "Bay Area Theatresports") is a non-profit improvisational theatre company in San Francisco. Founded in 1986, their unique style of acting-based improvisational theatre is well known in improv circles around the world. BATS is the largest improvisational theatre company and school in Northern California.2
Since 1986, BATS helped create and define a unique San Francisco style of long-form improvisation: a single-story 2-hour show, complete with intermission.
From Wikipedia’s article on BATS Improv, shared under CC BY-SA 4.0.3
The numbers on this page point here. Each one links to the record it came from.