Tarout Island is a populated island in the Persian Gulf belonging to Saudi Arabia. The island has an area of 70 square kilometers and is second to Qeshm Island in length in the Persian Gulf. As of 1992, it had 38,055 inhabitants. It can be accessed by two causeways extending from Qatif. Hot and humid in the summer, with peaks around +40c (104F), it remains warm in the winter afternoons, reaching zeniths around +25c (77F) in the afternoon following a low at night of 0c (32F).

Popular lore says that the earliest known settlers were Canaanites and Phoenicians, who called the island "Ashtarut", and in the middle ages the island was often called Dairin or Daryn, for one of its cities. The many ancient artifacts that have been discovered there show occupancy dating back to the Stone Age. Pottery found in 1968 by the Danish Mission date civilization on the island as far back as 4500 B.C.

Coordinates: 26°34′N 50°04′E / 26.567°N 50.067°E / 26.567; 50.067