Morris Marshall Kirksey (September 13, 1895 – November 25, 1981) was an American track and field athlete and rugby union footballer who won two gold medals at the 1920 Summer Olympics.

[1] Born in Waxahachie, Texas, Kirksey moved to the San Francisco Bay Area when he was about thirteen years old, and graduated from the Palo Alto High School in 1913.

Six days later, he anchored the United States 4x100-meter relay team that won the gold medal in a world record time of 42.2 seconds.

Two weeks later, Kirksey won his second gold medal, helping the American rugby team defeat France 8–0.

He worked as a staff psychiatrist for the state Department of Corrections, assigned to San Quentin and Folsom prisons.