The Co Tu (or Ca Tu, Ca Tang; Vietnamese: người Cơ Tu) are an ethnic group in Vietnam. Most Co Tu live in the provinces of Thừa Thiên -Huế and Quảng Nam. The population is 50 458 in 1999. They speak a language in the Mon-Khmer language family.
The Co Tu typically serve rice cooked in bamboo stems such as zăr, aví hor, koo dep, koo gdhoong, and cha chắc, and drink a beverage called tavak. Their famous dances are tung tung (performed by males) and ya yá (performed by females). They play h'roa in ordinary life.
