Chatchai is the romanization of two Thai-language masculine given names: (, roughly 'umbrella of victory') and (, meaning 'male life' or 'manly'). The latter is also spelled Chartchai, among others.
Notable people with the given name include:
Chatchai Singwangcha, Thai boxer Chatchai-decha Butdee, Thai boxer Chatchai Plengpanich, Thai actor Chatchai Budprom, Thai footballer Chatchai Koompraya, Thai footballer Chatchai Narkwijit, Thai footballer
Notable people with the given name include:
Chatichai Choonhavan, former prime minister Chartchai Chionoi, professional boxer Chartchai Ngamsan, actor Chatchai Saengdao, footballer Chatchai Sriworakan, Navy commander Chartchai Tiptamai, boxer known professionally as Kongtoranee Payakaroon