Şemdin Sakık (born 1959), also known by his nom de guerre Şemo or Parmaksız Zeki, is a Kurdish militant commander, former senior Kurdistan Workers' Party (PKK) member.

In statements to the Ergenekon trials in 2012, he said that he became a PKK sympathizer in 1979, and joined after the 1980 Turkish coup d'état as a way of leaving the country[3] after a dispute with his father in which he shot and wounded him.

[4] His brother Sırrı Sakık was a member of the Grand National Assembly of Turkey for the Peace and Democracy Party (BDP).

Sakık later claimed that military commanders were aware of his planned Bingöl massacre, and deliberately left the soldiers unarmed and unguarded.

Öcalan then called him back to Damascus, and as he refused to obey his orders, later sent him into detention to the Gare camp in the Dohuk Governorate, Iraqi Kurdistan.