The phrase "Long Blue Line" may refer to:
Collegiate alumni edit
- Marietta College, Marietta, Ohio
- United States Air Force Academy, Colorado
- United States Coast Guard Academy, New London, Connecticut
Secondary school alumni edit
- St. Xavier High School, Cincinnati, Ohio (see List of St. Xavier High School (Ohio) people)
Other uses edit
- An episode in season 6 of Cold Case, an American television series
- The Troopers Drum and Bugle Corps