Otsjanep or Ocenep is a village in Asmat Regency, South Papua, Indonesia.

The village is located on the bank of the Ewta river[1] at the far north end of Indonesia's Casuarina Coast, named for its casuarina trees but now disappearing due to logging.

[3][4][5] The locals continue to wear traditional clothes,[6] but the village has a modern missionary church and – unusual in this area – grass lawns.

[6] It is part of a larger settlement consisting of Isar, Pirien, Kayarpis, and Bakyor in Fayit District.

[7] In his 2014 book "Savage Harvest," author Carl Hoffman presented evidence that Michael Rockefeller, son of U.S. Vice President Nelson Rockefeller, was killed and eaten by people from Otsjanep.