John the Baptist was a Jewish preacher active in the area of the Jordan River in the early 1st century AD. He is also known as Saint John the Forerunner in Eastern Orthodoxy, John the Immerser in some Baptist Christian traditions, Saint John by certain Catholic churches, and Prophet Yahya in Islam. He is sometimes alternatively referred to as John the Baptiser.

The Jordan River or River Jordan, also known as Nahr Al-Sharieat, is a 251-kilometre-long (156 mi) river in the Levant that flows roughly north to south through the freshwater Sea of Galilee and on to the salt water Dead Sea. The river passes by Jordan, Syria, Israel, and the Palestinian territories.