Serdar (formerly Kyzyl-Arvat or Gyzylarbat) is a location in Turkmenistan, located north-west of the capital, Ashkhabad on the road to the Caspian Sea. The population of Serdar is 50,000 people, mainly Turkmen. The main language spoken in the region is Turkmen. It is near the northwest end of the line of oases on the north slope of the Kopet Dag that extends southeast to Ashkhabad.