Truong Hai Auto Corporation (THACO), (Vietnamese: Công ty cổ phần ô tô Trường Hải), is an automobile manufacturer in Vietnam. THACO is a member of Vietnam Automobile Manufacturers Association (VAMA). The company was founded in 1997 and is considered one of the pioneers of the Vietnamese auto industry. In 2014 the company captured 32% of Vietnam's automobile market. As of 2017, THACO owned the largest automobile production capacity in Vietnam, at 71,000 units per year. In 2021, THACO acquired the Vietnamese retail operations of e-mart.