Omo‘a (or Omoa) is the name of a small town and valley at the head of a bay by the same name, on Fatu Hiva.

The village of Omo‘a was home to 247 inhabitants at the 2002 census.

The valley of Omo‘a is well-watered, and curves in a half-moon shape, first to the southeast, and then to the northeast, terminating at the island's central plateau.

This is where Thor Heyerdahl and his wife came ashore in 1937, an experience recorded in his book Fatu Hiva.

This French Polynesia-related geography article is a stub.