Geoffrey II de Villehardouin Prince of Achaea
- Born: Abt 1195
- Marriage: Agnes de Courtenay in 1217
- Died: 1245 about age 50
- Buried: Monastery of St. Jacob, Andravida, Ilia, Greece
Geoffrey II Villehardouin was a Prince of Achaea, the first son of Geoffrey I Villehardouin (1218-1245).
He was recognized by the Latin emperor of Constantinople Peter of Courtenay. In 1217 he married the daughter of Peter of Courtenay and Yolanda of Flanders, Agnes de Courtenay. Following his father's policy, he dissatisfied the latin priests by restricting their activities and finances and he was excommunicated by the pope. Due to the difficult situation of the Latin empire, which needed his support, the excommunication was lifted.
From the taxes gained from the church, he built a castle in Elis, the Chlomoutsi castle. He supported the orhodox priests, whom he excluded from taxation and military service. In July 1237 he gave the Teutonic Knights a hospital in Andravida.
He was able to gather a strong army and fleet, so that when John III Ducas Vatatzes sieged Constantinople in 1236, Geoffrey II came to support with 100 knights, 800 archers and 6 vessels, releasing Constantinople from the siege. He also provided the Latin empire in Constantinople with 22 000 hyperpyron. In recognition of his services, he was awarded by the emperor the Aegean Sea, Evoia and several places in Sterea Hellas.
Geoffrey II died in 1245 and he was buried in his capital Andravida in the church of the monastery of St. Jacob.
Geoffrey married Agnes de Courtenay, daughter of Emperor of Constantinople Pierre II (Peter) de Courtenay and Yolande Countess of Flanders, in 1217. (Agnes de Courtenay was born about 1201.)