Arabia Petraea or Petrea, also known as Rome's Arabian Province or simply Arabia, was a frontier province of the Roman Empire beginning in the 2nd century. It consisted of the former Nabataean Kingdom in the southern Levant, the Sinai Peninsula and northwestern Arabian Peninsula. Its capital was Petra. It was bordered on the north by Syria, on the west by Judaea and Egypt, and on the south and east by the rest of Arabia, known as Arabia Deserta and Arabia Felix.

Roman Syria was an early Roman province annexed to the Roman Republic in 64 BC by Pompey in the Third Mithridatic War following the defeat of King of Armenia Tigranes the Great, who had become the protector of the Hellenistic kingdom of Syria.