William Barlow
William, Bill, or Billy Barlow may refer to:
Religion
- William Barlow (bishop of Chichester), English cleric
- William Barlow (bishop of Lincoln), English Anglican priest and courtier
- William Barlow (archdeacon of Salisbury), Welsh churchman and writer on magnetism
- William Rudesind Barlow, English Benedictine monk
- William Barlow (dean of Peterborough), Anglican priest
Others
- William Henry Barlow, English civil engineer
- William Barlow (pioneer), American pioneer in Oregon
- William Barlow (vice-chancellor), Irish-Australian lawyer and academic
- William Barlow (geologist), English geologist
- Billy Barlow, Canadian ice hockey player
- Bill Barlow, Canadian politician in Ontario
- William K. Barlow, American politician in Virginia
Other uses
- William Barlow House, American historic building in Clackamas County, Oregon
- William V. N. Barlow House, American historic building in Albion, New York