This list is of the Historic Sites of Japan located within the Prefecture of Saga.
As of 1 August 2014, twenty-four sites have been designated as being of national significance (including three *Special Historic Sites); Kii Castle spans the prefectural borders with Fukuoka.
As of 1 May 2014, forty-six sites have been designated as being of prefectural importance.
As of 1 May 2014, a further eighty-two sites have been designated as being of municipal importance.