Zêkog County (Tibetan: རྩེ་ཁོག་རྫོང; Chinese: 泽库县) is the second largest administrative subdivision by area within Huangnan Tibetan Autonomous Prefecture in eastern Qinghai Province, China, bordering Gansu to the east.

The county has an area of 6,658 square kilometres or 2,571 square miles and a population of ~50,000 (2001), mainly Tibetan.

The county seat is the town of Chak Qu, whose altitude is approximately 3,700 metres or 12,100 feet above sea level.

Zêkog County is made up of 4 towns and 3 townships: Zêkog County has an alpine climate (Köppen ETH) due to very high elevation.

This Qinghai location article is a stub.