Ralph Clyde "Mac" McKinzie (October 1, 1894 – December 7, 1990) was an American football, basketball, and baseball coach.

[1] McKinzie was the football coach for Ronald Reagan, the 40th President of the United States.

[2] Eureka named its football field, McKinzie Field, after McKinzie.

# denotes interim head coach # denotes interim head coach # denotes interim head coach

This biographical article relating to a college football coach first appointed in the 1920s is a stub.