John MacIntosh Lyle (1872–1945) was an Irish born Canadian architect, designer, urban planner, and teacher active in the late 19th century and into the first half of the 20th century. He was a leading Canadian architect in the
Beaux Arts style and was involved in the
City Beautiful movement in several Canadian cities. In the 1920s, he worked to develop his vision of a uniquely Canadian style of architecture.