William Roche
William Roche or Bill Roche may refer to:
- Bill Roche, Australian businessman
- William Roche (Irish politician), Member of the UK Parliament for Limerick City
- William Roche (mayor), Lord Mayor of London and MP
- William Roche (Nova Scotia politician), Canadian politician in Halifax, Nova Scotia
- William Roche (rugby union), Irish rugby union player
- William James Roche, Canadian politician and Conservative Member of Parliament for the Manitoba riding of Marquette