The Principality of Antioch is one of the crusader states created during the First Crusade; it includes parts of modern-day Turkey and Syria.The Principality of Antioch is much smaller than the County of Edessa or the Kingdom of Jerusalem.

It extends around the northeastern edge of the Mediterranean, bordering the County of Tripoli to the south, Edessa to the east, and the Byzantine Empire or the Kingdom of Armenia to the northwest, depending on the date.

It has roughly 20,000 inhabitants in the 12th century, most of whom are Armenians and Greek Orthodox Christians, with a few Muslims outside the city itself.

Most of the crusaders who settle here are of Norman origin or from southern Italy, as are the first rulers of the principality, who surround themselves with their own loyal subjects.

Few of the inhabitants apart from the Crusaders are Roman Catholic even though the city is turned into a Latin Patriarchate in 1100.