Khirbat al-Tannur, also known as Allar al-Sifla, was a Palestinian Arab hamlet in the Jerusalem Subdistrict, near Allar. It was depopulated during the 1948 Arab–Israeli War on October 21, 1948, under Operation Ha-Har. It was located 18.5 km west of Jerusalem.

The Jerusalem Subdistrict was one of the subdistricts of Mandatory Palestine. It was located in and around the city of Jerusalem. After the 1948 Arab–Israeli War, on the Israeli side of the Green Line, the district was integrated into the Jerusalem District. On the other side, the West Bank was annexed into Jordan, the subdistrict was merged with Ramallah Subdistrict to form Jerusalem Governorate, one of three Jordanian governorates in the West Bank.