Philologus of Sinope was an early Christian priest and apostle who is recognized as one of the Seventy Disciples. Mentioned by the Apostle Paul in his Epistle to the Romans, he is traditionally associated with the city of Sinope. Some historical accounts suggest he may have been the father of Marcion of Sinope, the individual who established the Marcionite movement. He is honored within both the Catholic and Orthodox traditions for his role in the early Church.