Guy of Ibelin (French: Guy d'Ibelin) (before 1306 – 1350/60) was seneschal of Cyprus from 1318 and a burgher of Venice from 30 December 1334. He was the son of Philip of Ibelin (1253–1318), previous seneschal of Cyprus and Jerusalem by his second wife Maria of Giblet (d. 1331). He was evidently held in high regard by King Hugh IV of Cyprus, since he is named in a royal decree from 1329 as a "magnificus vir" , in charge of four newly created priesthoods in the cathedral of Nicosia.
He married Margaret of Ibelin with papal dispensation in 1319. They had three children:
John of Ibelin (d. after 1367), seneschal of Cyprus after his father's death
Alice of Ibelin (d. after 1374), who married John of Lusignan (1329/30-1375), titular Prince of Antioch and Regent of Cyprus
Margaret of Ibelin