David Lawrence McKay
- Bats Both, Throws Right
- Height 6' 1", Weight 195 lb.
- School Columbia Basin College, Creighton University
- High School Sir Charles Tupper Secondary School
- Debut August 22, 1975
- Final Game October 3, 1982
- Born March 14, 1950 in Vancouver, BC CAN
He was the only Canadian on the roster of the original Toronto Blue Jays in 1977, having been taken from the Minnesota Twins in the expansion draft. He was the team's starting third baseman on Opening Day.
After his playing career ended, he was an Oakland Athletics coach from 1983 to 1995. These years included stints as a player/coach for the Modesto A's and Tacoma Tigers in 1983, bullpen coach for the A's from May 24th, 1984 through 1985, first base coach in 1986, fitness coach in 1987-1988, and first base coach 1989-1995. He followed manager Tony LaRussa to the St. Louis Cardinals, where he was the first base coach from 1996 until 2011. After LaRussa retired, McKay moved to the Chicago Cubs as first base coach under new manager Dale Sveum in 2012 and 2013, then in 2014 moved to the Arizona Diamondbacks as first base coach.
He is the father of Cody McKay.