The Capitol Theatre is a historic theatre in Windsor, Ontario, Canada. Opened in 1920 as the Vaudeville Theatre by Marcus Loew at a cost of approximately $600,000, and designed by Thomas White Lamb, it was the largest single floor theatre in Canada at the time, with 1,995 seats. In 1922, it assumed its current name, as the Capitol Theatre. The theatre was one of sixteen Canadian theatres Lamb designed, including Toronto's Pantages (now the Ed Mirvish Theatre), The Elgin and Winter Garden Theatres, and the Ottawa Capitol.