The Asian-Pacific Postal Union (APPU) is an intergovernmental organization of 32 countries in the Asia-Pacific region. The purpose of the union is to extend, facilitate and improve the postal relations and promote cooperation in the field of the postal services between the member-countries. APPU is a Restricted Union as defined by Article 8 of the Universal Postal Union, serving to coordinate postal services in the region. It is headquartered in Bangkok, Thailand.