William Brack (born 26 December 1935) is a Canadian former racing driver.

Brack subsequently became a Formula One driver who raced for the Lotus and BRM teams.

After Formula One he was successful in Atlantic Championship in the mid-1970s, having won the Canadian Formula Atlantic Championships in three successive years (1973, 1974, 1975) before retiring from racing to open a Daimler Chrysler dealership (Downtown Chrysler) near the Canadian National Exhibition in Toronto.

He is not related to the Swedish race car driver Kenny Bräck.

You can help Wikipedia by expanding it.This biographical article related to Canadian auto racing is a stub.