Lewis Telle Cannon (April 22, 1872 – October 10, 1946) was an early 20th-century architect in Salt Lake City, Utah who designed several buildings throughout the intermountain west.

Cannon was trained at the Massachusetts Institute of Technology and after returning to Utah began a firm with Ramm Hansen for a brief time in 1908 and then another firm with John Fetzer (architect) named Cannon & Fetzer in 1909.

Cannon & Fetzer existed until 1937 and produced civic buildings, meetinghouses, and residences, many of which remain and are listed on the National Register of Historic Places.

[2] Lewis was born to the Church of Jesus Christ of Latter-day Saints leader George Q. Cannon and Martha Telle Cannon in Salt Lake City on April 22, 1872.

Lewis died October 10, 1946, in Salt Lake City, and was buried at Salt Lake City Cemetery.