Lambom Island or Lambon or Lumbom, also known as Wallis Island, and Île aux Marteaux, is an island off the south-western corner of New Ireland, Papua New Guinea, off Lambom.^[1][2] On the other side of the Cape St. George peninsula is Lanisso Bay.

The island was visited by Philip Carteret in June 1767, on his round-the-world voyage in Swallow. He named it Wallis Island, after Samuel Wallis. Wallis had set out with him in Dolphin, but the two ships were separated in a storm after passing through the Strait of Magellan.^[3]

In July the following year the expedition of Louis Antoine de Bougainville arrived. He named the island Île aux Marteaux, "Hammer Island" after a species of Malleus, the hammer shell or hammer oyster found there, which was not often found in European collections.^[4]