| Name | Also Known As | City | State | Country | Web Address |
| Calgary Board of Education | CBE | Calgary | Alberta | Canada | |
| Rapid Fire Theatre Society | Edmonton Theatresports | Edmonton | Alberta | Canada | |
| Tales From the Improv Zone | | Sherwood Park | Alberta | Canada | |
| TRUDAT | Thompson Rivers University Drama and Theatre | Kamloops | British Columbia | Canada | |
| The Revelstoke Theatre Company | | Revelstoke | British Columbia | Canada | |
| Vancouver Theatresports League | VTSL | Vancouver | British Columbia | Canada | |
| The Impromaniacs | Impromaniacs Theatre Company Society | Victoria | British Columbia | Canada | |
| Bad Dog Theatre Company | | Toronto | Ontario | Canada | |
| Palm Springs Theatresports | | Cochella Valley | California | USA | |
| BATS Improv | Bay Area Theatresports | San Francisco | California | USA | |
| Santa Rosa Players | 6th Street Playhouse | Santa Rosa | California | USA | |
| Denver Theatresports | | Denver | Colorado | USA | |
| Dad's Garage Inc. | | Atlanta | Georgia | USA | |
| Class Act | | Champaign-Urbana | Illinois | USA | |
| Freestyle Repertory Theatre | Theatresports New York | New York | New York | USA | |
| Village Idiots Present Theatre Company | Village Idiots | Rochester | New York | USA | |
| The Mop and Bucket Company | Wide Net Improv Theatre | Schenectady | New York | USA | |
| The Brody Theater | | Portland | Oregon | USA | |
| ChildrenÕs Educational Theatre | CET | Salem | Oregon | USA | |
| Philly Improv Theater | PHIT | Philadelphia | Pennsylvania | USA | |
| The Hideout Theatre | Improv Productions | Austin | Texas | USA | |
| Clutch City Improv | | Houston | Texas | USA | |
| Robinson Secondary School Drama Boosters | | Robinson | Virginia | USA | |
| Unexpected Productions | Seattle Theatresports | Seattle | Washington | USA | |
| Atlas Improv Co. | | Madison | Wisconsin | USA | |
