Uncle of actress Tracy Nelson.

Mother is actress Elyse Knox.

His uncle, Ron Knox (his mother's brother), was also a college football star and played one season as a professional quarterback for the Chicago Bears.

Father is football star Tom Harmon.

No relation to Angie Harmon.

Chosen as People Magazine's Sexiest Man Alive. [1986]

Brother of actress Kelly Harmon.

Graduated cum laude from UCLA, 1974, with degree in communications. Also played quarterback for UCLA Bruins, 1972-73 winning National Football Foundation Award for all-round excellence.

Brother-in-law of singer Ricky Nelson.

Harmon and Pam Dawber have two children: Sean Thomas Harmon born 26 April 1988 and Ty Christian Harmon born 25 June 1992.

Risked his life to save two teenage boys who were involved in a car accident outside of his home. Harmon used a sledge hammer from his garage to break the window out of their car then pulled them free so they wouldn't be burned to death, while his wife Pam Dawber called 911. He made every effort to downplay his role in saving their lives. [1996].

Good friends with David Bortolucci.

Worked as a carpenter before he hit it big.

His godfather Forest Evashevski is in the National Football Foundation Hall of Fame.

Uncle of Sam Nelson.

Grandson of William Franklin Knox, United States Secretary of the Navy during World War II and Republican candidate for Vice President in 1936.

Father, Tom Harmon, played for the University of Michigan Wolverines and won the 1940 Heisman Trophy emblematic of the best player in the nation.

Brother of Kristin Harmon.

Worked as a carpenter before he hit it big

Chosen as People Magazine´s Sexiest Man Alive(1986)

Brother of Kristin Harmon

Brother of actress Kelly Harmon

Father is Football Star Tom Harmon

Mother is actress Elyse Knox

Uncle of musicians Gunner Nelson and Matthew Nelson