- Horace - Roman poet
- Horace Alexander - Ornithologist
- Horace Donisthorpe - Eminent British Entomologist, Myrmecologist and Coleopterist
- Horace Furness - Shakespeareanan scholar
- Horace Grant - basketball player
- Horace Gray - American jurist
- Horace Greeley - author and newspaper editor
- Horace Mann - American lawyer
- Horace Pippin - American artist
- Horace Porter - American soldier and diplomat
- Horace Benedict de Saussure - Swiss alpinist and mountain pioneer
- Horace Silver - jazz musician
- Horace Tabor - American prospector
- Horace de Vere Cole - eccentric British aristocrat and prankster
- Horace Vernet - French painter of military themes
- Horace Walpole - 4th Earl of Oxford, novelist and politician