Raoul of Mérencourt (also called Ralph or Radulphus) was Latin Patriarch of Jerusalem from 1214 to 1224. He succeeded the assassinated Albert Avogadro. Raoul de Mérencourt was a native of Champagne. He seems to have come to the Holy Land as part of the entourage following Henry II, count of Champagne and future husband of Isabella I, queen of Jerusalem. Raoul worked as a notary in the Haute Cour in Acre. In 1206 Albert, formerly bishop of Vercelli, arrived as the new patriarch, following upon Soffredo Gaetani, who resigned the office after only one year, and went off to join the Fourth Crusade in Constantinople.