Umm Kalkha was a small Palestinian village in the Ramle Subdistrict of Mandatory Palestine.

It was located 12.5 km south of Ramla, situated on the northern banks of Wadi al-Sarar.

Umm Kalkha was established during the British Mandate era by the Nashashibi family.

Its workers, settling in an area of orchards, came mostly from places near modern Rehovot, including Zarnuqa and al-Qubayba.

"[7] In 1882, the PEF's Survey of Western Palestine (SWP) noted: "There are traces here of an old town, caves, cisterns of rubble, masonry, and pottery fragments.