Selleck was born on January 29, 1945 in Detroit, Michigan, where he was the son of Martha S. (née Jagger), a homemaker, and Robert D. Selleck, an executive and real estate investor. The family moved to Sherman Oaks, Los Angeles, California, when Selleck was growing up.

Selleck graduated from Grant High School in 1962. Along with modeling, Selleck attended the University of Southern California on a basketball scholarship where he played for the USC Trojans men's basketball team.

Tom Selleck's Family Tree