Bill Adam (born May 25, 1946) is a Canadian racing driver born in Airdrie, North Lanarkshire, Scotland.
In 2002, Adam drove two races of the Porsche Supercup at the Indianapolis Motor Speedway on United States Grand Prix weekend, placing 11th and 13th. The following year he was driving the number 23 Porsche 911 twice, in the Grand-Am Motorola Cup. He qualified the car 2nd on the grid at Mont Tremblant.
Recently, Adam has been racing an Audi R8 (chassis 405) in the Historic Sports car Racing series, winning the Daytona WSC Enduro race in November 2005. In 2008, Bill Adam, driving for Jim Rogers, won the overall HSR Championship, placing first in four races and second in the other three in which he partook. In 2010, Adam continued driving for Jim Rogers in a "new" Audi R8. This car, chassis 607, was unraced and used as a showcar by Audi, before being completely gone over by ex Champion crew chief Bobby Green. Teamed with Butch Leitzinger, Adam won the opening HSR race at Sebring for the team's first victory with this car. Road Atlanta and the "Mitty" followed, where teamed with Andy Wallace, they placed 2nd. The rest of the year was complete domination by the Adam/Wallace team as they won at Road America, Wisconsin and followed with pole positions AND wins at Road Atlanta (September), Homestead Miami Speedway, and the Sebring finale, winning the HSR Championship. He is the father of auto racing reporter Shea Adam.