William Gallagher
William Gallagher may refer to:
- William Gallagher , baseball player
- William Gallagher , British civil servant
- William Gallagher , U.S. Representative from Minnesota
- William Gallagher, British writer and journalist
- William Davis Gallagher, American journalist and poet
- William J. Gallagher, president of Riverside Military Academy in Gainesville, Georgia
- William M. Gallagher, Pulitzer Prize-winning photographer
- Bill Gallagher , US baseball player
- Billy Gallagher , US businessman
- Bill Gallagher , New Zealand businessman and inventor
- Billy Gallagher , chef and businessman in South Africa
- Billy Gallagher , Australian rules footballer
- Billy Zero, radio and TV host
- Liam Gallagher, Oasis singer
- Rory Gallagher, Irish blues-rock multi-instrumentalist, songwriter, and bandleader