Mirvish Productions | 5,341 followers on LinkedIn. Canada's largest commercial theatre production company. | Mirvish Productions is a Canadian theatre management and production company, based in Toronto, founded by David Mirvish in 1987. The organization owns and operates four magnificent theatres in downtown Toronto - the Royal Alexandra, the Princess of Wales, the CAA Ed Mirvish and the CAA Theatre - each offering its patrons a unique theatre-going experience.