The Loose Moose Theatre Company (LMTC), was co-founded in 1977, by Keith Johnstone and Mel Token. LMTC has an international reputation for developing the theatrical style of improvisation and specifically the work of Keith Johnstone. LMTC is the birthplace of such improvisation shows as Theatresports™, Micetro™, Gorilla Theatre™ and Life Game™. Keith Johnstone is one of the major influences on modern improvisational theatre. ... Improvisation is the act of making something up as it is performed. ... Theatresports is a form of competitive improvisational theatre and is a trademark of the International Theatresports Institute (ITI). ...

The Loose Moose is a active theatre company producing in house and touring, plus it offers a training centre for individuals interested in improvisational theatre. They have continued a long-standing tradition of producing a weekend-afternoon series of children's theatre, and an evening series of improvisational comedic theatre.

Loose Moose has existed in a few venues since its inception. Beginning in a space within an industrial complex in the northeast area of Calgary (near the airport). After space-use and lease negotiations with a neighbouring Christian academy failed to be resolved, LMTC took up in the historic Garry Theatre in the Inglewood district. In 2005, LMTC moved into a new performance space in the Calgary Crossroads Market. Motto: Heart of the new west Area: 712. ...

Many LMTC alumni are now working in the areas of film, television, stage and still use their improvisational skills as a foundation for their work. Loose Moose Alumni include Dennis Cahill, Tony Totino, Rick Hilton, Dave Duncan, Mark McKinney, Bruce McCulloch, Veena Sood, Clem Martini, Patti Stiles, Peter Oldring, Derek Flores, Eric Amber, Roman Danylo, Shawn Kinley