khirbat jiddin (), known in the kingdom of jerusalem as judin, was an ottoman fortress in the western upper galilee, originally built by the teutonic order after 1220 as a crusader castle, 16 km northeast of the city of acre, which at the time was the capital of the kingdom of jerusalem. the castle was destroyed by the mamluk sultan baibars sometime between 1268-1271 and lay in ruins until being rebuilt and expanded by the arab ruler zahir al-umar as "qal'at jiddin" () in the 1760s, only to be destroyed again around 1775 by jazzar pasha. the ruined fortress, known as khirbat jiddin, was later inhabited by the al-suwaytat bedouin tribe.