Ethelton is a north-western suburb of Adelaide 13 km from the CBD, on the LeFevre Peninsula, in the state of South Australia, Australia and is within the City of Port Adelaide Enfield. It is adjacent to Semaphore, Semaphore South and Glanville. It is bounded to the north by Hart Street, to the south by Bower Road and in the west and east by the Swan Terrace and the Port River, respectively.