Sakon Nakhon is a city in Thailand within the Isan region, and capital city of Sakon Nakhon Province as well as Mueang Sakon Nakhon District, with a population of approximately 76,000. Sakon Nakhon covers the whole tambon of That Choeng Chum and parts of tambons Ngio Don, Huai Yang, Dong Mafai, That Na Weng and Hang Hong. Sakon Nakhon is 651 km (405 mi) north-east of Bangkok by road.

Sakon Nakhon is one of Thailand's seventy-six provinces (changwat) lies in upper northeastern Thailand also called Isan. Neighboring provinces are Nong Khai, Bueng Kan, Nakhon Phanom, Mukdahan, Kalasin, and Udon Thani. The capital is Sakon Nakhon.