Imperial Theatre is an 874 seat proscenium Theatre located in Saint John, New Brunswick on Canada's East Coast. Originally opening in 1913, Imperial Theatre is hailed as the most beautifully restored theatre in Canada. In operation for 29 years since the grand re-opening, Imperial Theatre is Saint John's premier performance space.

Imperial Theatre's mandate is to "enrich, engage and inspire our community the performing arts." Programming choices are based on assessment of past and current Seasons, including criteria such as artistic excellence, presentation of varied genres and cultures, tickets ales, opportunities for engagement activities and balancing familiar work with challenges.

Imperial Theatre has defined its core business as follows:

To enrich the community by providing a professional quality, multi-purpose facility;

To engage audiences through world-class entertainment experieces;

To encourage (inspire) the presentation of local productions and the development of the arts. 

The Imperial Theatre Foundation was formed to ensure that the theatre remains for future generations.