Jash (Kurdish: جاش, romanized: Caş, lit. 'donkey's foal')[1] is a Kurdish term for a traitor, or a type of collaborator,[1] either a military unit composed of Kurds or an individual which cooperates with enemy combatants against the Kurdish people, Kurdish political interests, or the Kurdish Army.[1][2][3] The term is considered derogatory in a cultural sense,[1] in much the same way as the use of the term quisling in the Western world.
Kurds who collaborated with the Ba'ath Government, Kurds in the Village Guards, the Kurdistan BMC, and the Kermanshah NAC are exampled of what would be considered "jash" by some Kurds.