Chalermchai (, ) is a Thai masculine given name. People with the name include:
Chalermchai Charuvastr (1916–2009), army general, hotelier and business executive Chalermchai Kositpipat (born 1955), painter and National Artist Chalermchai Sitthisart (born 1957), former Commander-in-chief of the Royal Thai Army Chalermchai Sri-on (born 1965), politician and former government minister