The Queen Elizabeth Theatre was opened in July, 1959. This 2813-seat multipurpose auditorium is owned and operated by the City of Vancouver and is rented for religious meetings, fashion shows, jazz concerts, symphony concerts, conventions, amateur and professional dramatic productions, etc. The hall is quite wide and relatively shallow, with a large balcony and a low, average ceiling height. The cubage is approximately 650 000 cu ft. The side walls are of wood laminated to plasterboard to decrease low-frequency absorption. The stage house is equipped with a demountable plywood concert enclosure. This paper describes general design objectives and aspects of the acoustical design of the theatre and reports reverberation measurements. The architectural firm of Affleck, Desbarats, Dimakopoulos, Lebensold, Michaud, and Sise won this commission during a competition in 1954–1955. Professor Stewart Marshall of McGill University served as the acoustical adviser to the architects during the competition. Bolt Beranek and Newman Inc. worked with the architects from August, 1955, through completion of the building.