The Anglo-Chinese School Old Boys' Association, usually abbreviated as the OBA or ACSOBA, is an alumni association founded in 1914 as a means by which old boys and girls of the Anglo-Chinese School family of schools could keep in touch with each other and continue to participate in the life of the institution. Its current chairman is Dr Ang Peng Tiam. Its main objectives, as stated in its constitution, are: i. To promote the advancement and improvement of its members physically, intellectually, socially and morally.