William Roche or Bill Roche may refer to:
Bill Roche (c. 1935–2022), Australian businessman William Roche (Irish politician) (1775-1850), Member of the UK Parliament for Limerick City William Roche (mayor) (by 1478–1549), Lord Mayor of London and MP William Roche (Nova Scotia politician) (1842–1925), Canadian politician in Halifax, Nova Scotia William Roche (rugby union) (1895–1983), Irish rugby union player William James Roche (1859–1937), Canadian politician and Conservative Member of Parliament for the Manitoba riding of Marquette
See also William Roach (disambiguation)