The Unai Pass or Onai Pass is a mountain pass on the western side of the Paghman Mountains in Jalrez District, Maidan Wardak Province, Afghanistan. It is of strategical importance due to its geographical location to the southwest of Kabul. The Sarchashma River flows through the pass, which is the upstream part of the Kabul River. The Maidan River, a tributary of the Kabul/Sarchashma rises at the pass at an altitude of about 3,300 metres (10,800 ft).