Damietta (Egyptian Arabic: Dumya廜凌??? also known as Damiata, or Domyat), is a port and the capital of the Damietta Governorate in Egypt, a former bishopric and present multiple Catholic titular see. It is located at the Damietta branch, a distributary of the Nile, 15 kilometres (9.3 mi) from the Mediterranean Sea, about 200 kilometres (120 mi) north of Cairo.

Damietta was also the object of the Seventh Crusade, led by Louis IX of France. His fleet arrived there in 1249 and quickly captured the fort, which he refused to hand over to the nominal king of Jerusalem, to whom it had been promised during the Fifth Crusade. However, having been taken prisoner with his army in April 1250, Louis was obliged to surrender Damietta as ransom.