Esna (  ), known to the ancient Egyptians as Egyptian: Iunyt or Ta-senet; Greek: (Latopolis or Letopolis) or (Polis Laton) or (Latton); Latin: Lato, is a city in Egypt. It is located on the west bank of the River Nile, some 55 km south of Luxor. The town was formerly part of the modern Qena Governorate, but as of 9/12/2009, has been incorporated into the new Luxor Governorate.

The submarine forces of France (Forces sous-marines or FSM) is the submarine component of the French Navy.