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