- Co-owned, with his father, an extensive collection of books about football, which he donated to the Naval Academy in 2006.
- In addition to playing football in college, also played lacrosse and squash.
- Was selected as one of Time magazine's 100 most powerful and influential people in the world in 2004.
- In September 2007, was fined $500,000 for illegally filming the sidelines of the New York Jets; the Patriots were also fined $250,000 and stripped of a first-round draft pick.
- Stephen Belichick — Father
- Stephen Belichick — Son
- Debbie Belichick — Ex-wife
- Jeannette Belichick — Mother
- Brian Belichick — Son
- Amanda Belichick — Daughter
- Wesleyan University, Middletown, CT (BS in Economics, 1975)