Comai County (, ) is a county of Shannan located in the south-east of the Tibet Autonomous Region, China.
Comai County is famous for its Tibetan Mastiffs and known as the home of Tibetan Mastiff.
Tibetan Mastiff is 24-28 inches tall (at shoulder) and weighs 140-180 pounds. The dog is commonly found wearing a red yak's-hair collar.
Comai County contains 2 towns and 2 townships.