Şemdin Sakık (born Muş Province, Turkey 1959), nicknamed Semo or Parmaksiz Zeki (fingerless Zeki) for having lost a finger while firing a rocket, is a former commander of the Kurdistan Workers' Party (PKK)'s military forces. He is best known for ordering the May 24, 1993 PKK ambush. He has been imprisoned since his capture in Iraqi Kurdistan by Turkish forces in 1998, shortly after his defection to the Kurdistan Democratic Party. He was a key witness in the Ergenekon trials.