International Society for Pediatric Dermatology Website: http://www.ispd.actu.com/
International Society for Pharmaceutical Engineering (ISPE) Website: http://www.ispe.org
International Society of Automation (ISA) Website: http://www.isa.org
International Society of Beverage Technologists (ISBT) Website: http://www.bevtech.org/
International Society of Dermatology Website: http://www.intsocderm.org/
International Society of Sugar Cane Technologists Website: http://www.issct.org/
International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) Website: http://www.isuog.org/
International Solar Energy Society (ISES) Website: http://www.ises-online.de
International Sports Engineering Association Website: http://www.sportsengineering.org
International Studies Association (ISA) Website: http://www.isanet.org
International Stuttering Association (ISA) Website: http://www.isastutter.org/
International Technology and Engineering Educators Association Website: http://www.iteaconnect.org
International Textile Manufacturers Federation (ITMF) Website: http://www.itmf.org/wb/
International Trade Administration Website: http://www.trade.gov
International Trade Forum Website: http://www.tradeforum.org
International Trademark Association (INTA) Website: http://www.inta.org/Pages/Home.aspx
International Transport Workers' Federation (ITF) Website: http://www.itfglobal.org
International Tube Association (ITA) Website: http://www.itatube.org
International Tungsten Industry Association Website: http://www.itia.info
International Tunnelling and Underground Space Association (ITA-AITES) Website: http://www.ita-aites.org/en/
International Union of Architects (UIA) Website: http://www.uia-architectes.org/en
International Union of Crystallography (IUCr) Website: http://www.iucr.org
International Water Association (IWA) Website: http://www.iwahq.org
International Waterless Printing Association (IWPA) Website: http://www.waterless.org
International Womens Leadership Association Website: http://www.theiwla.com
ISEAL Alliance Website: http://www.isealalliance.org/
Khoj International Artists' Association Website: http://www.khojworkshop.org
Laboratory Products Association (LPA) Website: http://www.lpanet.org