Tongdao (the full name: ""Tongdao Dong Autonomous County"", ; usually referred to as ""Tongdao County"", ) is an autonomous county of Dong people in Hunan Province, China, it is under the administration of Huaihua Prefecture-level City. Tongdao is also the 5th least-populous county of the province (after Shaoshan, Guzhang, Shuangpai and Yanling).
Dong people live in Hunan Province.