APOS was formed to assist Affiliated Societies/Associations to promote excellence in orthodontics through education and research in the Asian Pacific region. APOS disseminates scientific and artistic information relating to orthodontics, particularly through its biennial congress, the Asian Pacific Orthodontic Congress (APOC). The Asian Pacific Orthodontic Society (APOS) was inaugurated in October 2001 in Tokyo, Japan by its nine founding members:
Today the APOS has grown to 16 affiliate members with the addition of the following: