| Acronym | Definition |
|---|
| IBS | Irritable Bowel Syndrome |
| IBS | International Builders' Show |
| IBS | Institute of Behavioral Science |
| IBS | International Business Systems |
| IBS | International Bible Society |
| IBS | International Business Studies |
| IBS | International Biometric Society |
| IBS | Integrated Bridge System |
| IBS | Ion Beam Sputtering |
| IBS | Intercollegiate Broadcasting System (college radio stations) |
| IBS | Internet Broadcasting Systems |
| IBS | Integrated Broadcast Service |
| IBS | Institute for Biological Sciences (National Research Council, Canada) |
| IBS | Intelligent Building Systems |
| IBS | Institute of Banking Studies (Kuwait) |
| IBS | Internet Banking System |
| IBS | Integrated Booking System |
| IBS | Integrated Broadcast System |
| IBS | Integrated Business System |
| IBS | International Business Schools |
| IBS | Information-Based Strategy |
| IBS | International Business Service |
| IBS | INTELSAT Business Services |
| IBS | Intra-Beam Scattering |
| IBS | Impôt sur les Bénéfices des Sociétés (French, Algerian business tax) |
| IBS | Interactive Business Solutions |
| IBS | Ion Beam Spectrometer |
| IBS | Inflatable Boat, Small |
| IBS | Institute for Brewing Studies |
| IBS | International Benchrest Shooters |
| IBS | Infinity Business Systems (Tampa, FL) |
| IBS | Initial Benefit Statement |
| IBS | Internet Business Strategies |
| IBS | Indian Biophysical Society |
| IBS | Integrated Battle Space (NovaLogic multiplayer gaming arena) |
| IBS | In-Band Signaling |
| IBS | Internet Bumper Stickers (website) |
| IBS | Incremental Balancing Strategy |
| IBS | Intelligent Bridge System |
| IBS | Internal Billing System |
| IBS | Interlibrary Borrowing Service |
| IBS | Institute for Basic Standards |
| IBS | Interfund Billing System |
| IBS | Iowa Barbeque Society |
| IBS | Individual Benefit Statement (401k plans) |
| IBS | In Bedrijf Stelling (Dutch: Commissioning) |
| IBS | Innovative Banking Software (Switzerland) |
| IBS | International Broadcasting Services, Ltd. (publishing company; Penns Park, PA) |
| IBS | Industrial Benefits Sharing |
| IBS | Installed Base System |
| IBS | Infinity Business Solutions (Buena Park, CA) |
| IBS | Island Base Section |
| IBS | Integrated Biosphere Simulator |
| IBS | Inofficiella Bäsksällskapet |
| IBS | International Bankcards System |
| IBS | Internet Broking Systems |
| IBS | Imagery Boundary Extension |
| IBS | In-Brief Scheduler |
| IBS | Interference Beam Subtraction |
| IBS | Infinity Business School |
| IBS | Integrated Bar Code System (US Navy) |
| IBS | Interference Blanker System |
| IBS | Interim Billing System |
| IBS | Intelligence Broadcast System (US DoD) |
| IBS | Insurance Brokerage Service (various locations) |
| IBS | In-Building Solutions (wireless communciations) |
| IBS | Il Bilancio Sociale (Italian: The Social Report; ethics) |
| IBS | Integrated Biomedical Sciences (various schools) |
| IBS | Interdisciplinary Biomedical Sciences (various schools) |