KPMB is a Canadian architecture firm founded by Bruce Kuwabara, Thomas Payne, Marianne McKenna, and Shirley Blumberg, in 1987.

[2] KPMB's early projects were completed in association with Barton Myers, including Woodsworth College at the University of Toronto (1991) and the Art Gallery of Ontario Stage III Expansion (1992).

Early projects involved retrofits and infill projects juxtaposed with existing structures, including King James Place (1991) on Toronto's King Street East and the Design Exchange (1994), a retrofit of Toronto's former Stock Exchange building into an exhibition space for design.

In the 21st century KPMB completed a number of cultural facilities that contribute to what is known as the "Toronto Cultural Renaissance":[3] Roy Thomson Hall Enhancement (2002) home of the Toronto Symphony Orchestra, Canada's National Ballet School (2005) with Goldsmith Borgal Architects, the Gardiner Museum (2006), Young Centre for the Performing Arts (2006), TELUS Centre for Performance and Learning at the Royal Conservatory (2009), and the TIFF Bell Lightbox (2010) a permanent home for the Toronto International Film Festival.

Canadian projects include Le Quartier Concordia at Concordia University, the Remai Modern public art museum in Saskatchewan, and the LEED Platinum Headquarters Manitoba Hydro Place in Winnipeg, which some consider North America's most complex energy-efficient buildings in one of its most challenging climates.