The Prince of Wales Island, or Muralag, is an island of the Torres Strait Islands archipelago at the tip of Cape York Peninsula within the Endeavour Strait of Torres Strait in Queensland, Australia. The island is situated approximately 20 km (12 mi) north of Muttee Heads which is adjacent to Bamaga and south of Thursday Island. It is within the locality of Prince Of Wales within the Shire of Torres. In the 2021 census, Prince Of Wales had a population of 62 people.

The Torres Strait Islands are an archipelago of at least 274 small islands in the Torres Strait, a waterway separating far northern continental Australia's Cape York Peninsula and the island of New Guinea. They span an area of 48,000 km2 (19,000 sq mi), but their total land area is 566 km2 (219 sq mi).