Tatoosh Island is a small island and small group of islands about 0.5 miles (0.8 km) offshore (northwest) of Cape Flattery, which is on the northwestern tip of the Olympic Peninsula in Washington. Tatoosh is the largest of a small group of islands also often referred to as simply "Tatoosh Island", which are almost as far west as Cape Alava, about 15 miles (24 km) to the south and the westernmost point in the contiguous 48 states. The islands are part of the Makah Reservation and a part of Clallam County.