William Edmond Lescaze FAIA (March 27, 1896 – February 9, 1969) was a Swiss-born American architect, city planner and industrial designer.

He studied at the Collège Calvin and at the École des Beaux-Arts, before completing his formal education at the ETH Zurich, where Karl Moser was a teacher,[1] receiving his degree in 1919.

Lescaze contributed to the post-World War I reconstruction effort in Arras,[1] and then immigrated to the United States in 1920.

He worked for some time at the architectural firm of Hubbell & Benes in Cleveland, Ohio, and taught French at the local YMCA's night classes.

Within just a few weeks after joining forces, the duo began work on a large project for downtown Philadelphia.

[2] His 1937 Alfred Loomis house in Tuxedo Park, NY is regarded as an early experiment in double-skin facade construction.