IAP has been a member of the following international organizations:
International Union of Architects (UIA)
Commonwealth Association Of Architects (CAA)
Architects Regional Council Asia (ARCASIA), and
SAARC Association of Architects (SAARCH)

Members of IAP have been on the Council of UIA in different periods and have been very actively involved with ARCASIA since its inception and held various offices including the Chairmanship, twice, during the last twenty-four years.