ISB may refer to:
Education Indian School of Business, Hyderabad, Telangana, India International School of Business (Vietnam) Ho Chi Minh City, Vietnam International School Bangkok, Nonthaburi, Thailand, formerly in Bangkok International School Basel, Basel, Switzerland International School of Beaverton, Aloha, Oregon, United States International School of Beijing, Beijing, China International School of Belgrade, Belgrade, Serbia International School Benghazi, Benghazi, Libya International School of Bergen, Bergen, Norway International School of Boston, Cambridge, Massachusetts, United States International School of Broward, Hollywood, Florida, United States International School Brunei, Bandar Seri Begawan, Brunei International School of Brussels, Brussels, Belgium International School of Bucharest, Bucharest, Romania Instituto Simón Bolívar (Various countries)
Music I Shalt Become, an American black metal duo The Incredible String Band, a British folk rock musical group of the late 1960s International Society of Bassists, an international society dedicated to the double bass International Staff Band, a brass band of the Salvation Army International Submarine Band, American country-rock group
Religion Islamic Society of Baltimore, Catonsville, Maryland, United States Islamic Society of Boston, Boston, Massachusetts, United States Islamic Society of Britain, an Islamic organization
Science International Society for Biocuration International Society of Biomechanics (Various countries) Institute for Systems Biology, non-profit research institute in Seattle, WA
Other uses Impact Statement for Business, in UK law Imperial Security Bureau, the secret police force of the Empire in the Star Wars universe ISB Engine/Interact System B, a variant of the Cummins B Series engine used in Dodge trucks Independent sideband, radio modulation mode used in some AM radio transmissions International Socialist Bureau, the permanent organization of the Second International Internal Security Bureau, the "TSC police" National Park Service Investigative Services Branch Islamabad International Airport, the current airport of Islamabad and Rawalpindi, Pakistan (IATA airport code: ISB) Benazir Bhutto International Airport, formerly Islamabad International Airport, the former airport of Islamabad and Rawalpindi, Pakistan (formerly IATA airport code: ISB)