Sir William Ayloffe, 3rd Baronet (3 December 1618 – 1675) was an officer in the Royalist army during the English Civil War.
William was the eldest son of Sir Benjamin Ayloffe and his second wife, Margaret, the fifth daughter of Thomas Fanshawe.
As he died without any surviving children, Benjamin, his younger brother, inherited the baronetcy.
[1][2] Sir William married Anne (c. 1609–1684), 1st daughter of Peter Orby, of Burton Pedwardine, county Lincoln, and of Chertsey, Surrey, and Elizabeth, daughter of Robert Horseman, of Burton Pedwardine.
Anne was the widow of Frederick de la Tremouille, Count de Laval and Benon in the kingdom of France, brother to the Duke of Tremoville.