John Cresswell Parkin CC OOnt RCA (24 March 1922 – 22 November 1988) was a Canadian architect. From 1947 to 1969 he was the design chief for the Toronto firm John B. Parkin Associates with partner John B. Parkin. At the time it was the largest architectural firm in the Canada. In 1970 he formed his own firm, where he worked until his retirement in 1987. He is credited as one of the leaders in developing the mid-century modern style in Canada.