Michael Dean Keathley (born March 9, 1978) is an American former professional football guard in the National Football League (NFL). He played for the San Diego Chargers.
In 2003, Keathley was claimed by the Houston Texans after being waived by the Chargers, but he did not play any games for the Texans and re-signed with the Chargers later that year. In 2004, Keathley signed a one-year contract with the Chicago Bears, though he did not play.
Keathley played college football at Texas Christian University.
After his career in the NFL, he settled in Athens, Pennsylvania on his ranch, the Triple K Ranch, with his wife and three sons. He began to volunteer as a football coach; he has coached all three of his sons in high school football.