Wewak is the capital of the East Sepik province of Papua New Guinea. It is on the northern coast of the island of New Guinea. It is the largest town between Madang and Jayapura. It is the see city (seat) of the Roman Catholic Diocese of Wewak.

East Sepik is a province in Papua New Guinea. Its capital is Wewak. East Sepik has an estimated population of 433,481 people and is 43,426 km square in size.