Khairkot, also known as Zarghun Shar (زرغون‌ښار), Zarghun Shahr (زرغون‌شهر), or Katawaz (کټواز), is a town in and administrative seat of Khairkot District, Paktika Province, in eastern Afghanistan. The town is located within the heartland of the Sulaimankhel tribe of Ghilji Pashtuns.