Rule Wynn and Rule was an Albertan architectural firm that had offices in Calgary and Edmonton. The firm is noted for its prominent role in bringing modern architecture to Alberta.
Founded by John Ulric Rule (1904-1978) and Gordon K. Wynn (1910-1994) in Edmonton in 1938, they were joined a year later by Rule's brother, Peter Leitch Rule (1913-1964). The initial partnership came about as neither Rule nor Wynn could find work. All three partners were graduates of the school of architecture at the University of Alberta.
During World War II the Rule brothers's father, also named Peter, took charge of the firm. Peter worked as a building inspector for Alberta Government Telephones and during his time with the firm designed several telephone exchange buildings across the province. Although not trained as an architect, in January 1941 he was given a special certificate by the Alberta Association of Architects.
In 1945 the firm opened a second office in Calgary which was headed by Peter Rule (son). This office closed in 1986.
A descendant of the Edmonton firm exists today as HIP (Henderson Inglis Partridge) Architects.
The records of both the Edmonton and Calgary firms are held at the Canadian Architectural Archives in Calgary.