Joseph Roy may refer to: Joseph Roy (Lower Canada politician) (1771–1856), businessman and politician in Lower Canada Joseph-Edmond Roy (1858–1913), Quebec notary, editor and politician Joseph Alfred Ernest Roy (1871–1928), Quebec lawyer and member of the Canadian House of Commons Joseph Sasseville Roy (1895–?), Quebec businessman and member of the Canadian House of Commons Joseph-Aurélien Roy (1910–2001), Quebec businessman and member of the Canadian House of Commons and Quebec Assembly
Joseph Roy (bishop) (1925–2004), bishop of the Roman Catholic Diocese of Mysore Joseph Raymond Roy, former Canadian ambassador to Afghanistan