William Grundy "Wee Willie" Davis (December 7, 1906 – April 9, 1981) was an American film actor and professional wrestler.

He worked in the Jefferson County Jail in Louisville in 1972–1975 as the gym guard.

He was also an engineer and contributed to the invention of the Glowmeter, an early Heads up display that projected a car's speed onto the windshield.

A fellow wrestler, "Prince Ilaki Ibn Ali Hassan" (real name Agisilaki Mihalakis), who also fought as the "Mad Greek", was the primary inventor.

This article about a United States film actor born in the 1900s is a stub.