John D'Oyly may refer to:
Sir John D'Oyly, 1st Baronet, of Chislehampton (1640–1709), MP for Woodstock (UK Parliament constituency) Sir John D'Oyly, 1st Baronet, of Kandy (1774–1824), British colonial administrator Sir John D'Oyly, 2nd Baronet (1670–1746), of the D'Oyly baronets Sir John D'Oyly, 4th Baronet (1702–1773), of the D'Oyly baronets Sir John D'Oyly, 6th Baronet (1754–1818), MP for Ipswich Sir John D'Oyly, 8th Baronet (1794–1869), of the D'Oyly baronets Sir John D'Oyly, 13th Baronet (1900–1986), of the D'Oyly baronets