Wilson's Arch is the modern name for an ancient stone arch in Jerusalem, the first in a row of arches that supported a large bridge connecting the Herodian Temple Mount with the Upper City on the opposite Western Hill. The Arch springs from the Western Wall and is still visible underneath later buildings set against the Wall. The name Wilson's Arch is also used to denote the hall that it partially covers, which is currently used as a synagogue. This hall opens towards the Western Wall Plaza at the Plaza's northeast corner, so that it appears on the left of the prayer section of the Western Wall to visitors facing the Wall.

Lieutenant-General Sir Charles William Wilson, KCB, KCMG, FRS was a British Army officer, geographer and archaeologist.