- Harlequin Enterprises
- Harley Hotchkiss
- Harmonica
- Harmonium
- Harness Racing
- Harold Alexander, 1st Earl Alexander of Tunis
- Harold B. Town
- Harold Ballard
- Harold Bronson (Primary Source)
- Harold Brown
- Harold Cardinal
- Harold Chamberlain Banks
- Harold Connolly
- Harold Coward
- Harold Crookell
- Harold D. Kalman
- Harold E. Wright
- Harold Elford Johns
- Harold Eustace Key
- Harold Fenn (Profile)