Kaileuna is an island in the Trobriand Islands group of Papua New Guinea. With an area of 45.53 km², it is the second-largest island in the group, after Kiriwina.
As of the census of population of 2000, there were 1,908 people living on the island, in five villages:
A sixth village, Lebola, was uninhabited. Older maps still show a seventh village, Bulakwa, in the very south. The largest village, Kaduwaga, is on the north-west coast of the island.
Coordinates: 8°31′31″S 150°56′58″E / 8.52528°S 150.94944°E