| Acronym | Definition |
|---|
| ISB | Indian School of Business |
| ISB | Institute for Systematic Botany |
| ISB | Investors Savings Bank (New Jersey) |
| ISB | Inspection Service Bulletin (various organizations) |
| ISB | International School of Boston (Boston, MA) |
| ISB | Incredible String Band |
| ISB | In Silico Biology (journal) |
| ISB | International School of Business |
| ISB | Independent Science Board (Canada) |
| ISB | Invincible Super Blog |
| ISB | International Student Barometer |
| ISB | Internet Sharing Box |
| ISB | Inter Shelf Bus |
| ISB | Internal Service Broker |
| ISB | Internet Stock Blog |
| ISB | Internet Security Box |
| ISB | International Society of Biomechanics |
| ISB | Interstate (Tariff) Bureau, Inc. |
| ISB | Invest to Save Budget (UK) |
| ISB | International Society of Bassists |
| ISB | International Symposium on Biotechnology |
| ISB | Intermediate Staging Base |
| ISB | Independence Standards Board (for Professional Audtiors) |
| ISB | Internet Service Bus (computing) |
| ISB | International School of Beijing |
| ISB | International School of Bangkok |
| ISB | International Staff Band (of the Salvation Army) |
| ISB | Imperial Security Bureau (Star Wars) |
| ISB | International Society of Biometeorology |
| ISB | Islamic Society of Britain (UK) |
| ISB | Installed Base (products on customer's site.) |
| ISB | National Doctoral Programme in Informational and Structural Biology (Finland) |
| ISB | Independent Sideband |
| ISB | Institute of Systems Biology |
| ISB | Information Security Bulletin (journal) |
| ISB | In-Store Bakery |
| ISB | Interim Safety Board (US Air Force) |
| ISB | Information Systems Branch (various organizations) |
| ISB | Institut des Sciences Biologiques (French; Canada) |
| ISB | International Speedway Boulevard (Daytona Beach, Florida) |
| ISB | International Sports Broadcasting |
| ISB | Intra System Bus |
| ISB | International Scientific Board |
| ISB | International School of Beaverton |
| ISB | interscalene block |
| ISB | International Symposium on Bilingualism |
| ISB | Intermediate Small Bank |
| ISB | Indianapolis Symphony Band |
| ISB | International Studies Board (Utah) |
| ISB | Industrial Single Board (computing) |
| ISB | Industry Sectors Board (European Chemical Industry Council) |
| ISB | International Speakers Bureau, Inc |
| ISB | Islamabad, Pakistan - International (Airport Code) |
| ISB | Intermediate Support Base |
| ISB | Is Started By (time or date) |
| ISB | Intelligence Systems Board |
| ISB | International Services Branch (NIH) |
| ISB | Installation Supply Buffer (US Army) |
| ISB | Initial Staging Base |
| ISB | Incident Shadow Boundary |
| ISB | I'm So Bored |
| ISB | Inter Shelf Bus (ROLM telephone systems) |
| ISB | Intermediate-Significant Bit |
| ISB | Intelligence Support Battalion |
| ISB | Industrial Security Bulletin |
| ISB | Irving Symphonic Band (Irving, TX) |
| ISB | Islands Brygge (Danish railway station) |
| ISB | Iranian Society for Biotechnology |
| ISB | Intermediate Sustainment Base |
| ISB | Issues Screening Board |
| ISB | Installation Sustaining Base |
| ISB | Intermediate Signed Binary Form |
| ISB | Intermediate Supply Base |
| ISB | Investors Service Bureau (NYSE service) |
| ISB | In-Store Bank (bank or credit union branch in a military BX or PX) |
| ISB | Intelligence and Security Board |