Umm 'Ajra (Arabic: أم عجرة), was a Palestinian Arab village in the District of Baysan. It was depopulated by the Israel Defense Forces during the 1948 Arab-Israeli War on May 31, 1948, as part of Operation Gideon. It was located 4 km south of Baysan and the 'Ayn Umm 'Ajra provided the village with water.