| ISW | Important Soul Work 
| Others |
| ISW | In Service Workshop
| Others |
| ISW | Independent School of Winchester
| Others |
| ISW | India Society of Worcester
| Others |
| ISW | Indiana Southwestern Railway
| Others |
| ISW | Indiana Southwestern Railway Company
| Others |
| ISW | Indiana Sprint Week
| Others |
| ISW | Industrial Solid Waste
| Others |
| ISW | Indywidualny System Walki
| Others |
| ISW | Infinite Square Well
| Others |
| ISW | Information Security World
| Others |
| ISW | Information Service Workstation
| Others |
| ISW | Information Systems Worldwide
| Others |
| ISW | Injury Surveillance Workgroup
| Others |
| ISW | Injury Surveillance Workgroups
| Others |
| ISW | Inside Shoulder Width
| Others |
| ISW | Instand Shining Wizard
| Others |
| ISW | Instant Shining Wizard
| Others |
| ISW | Institute for Sexual Wholeness
| Others |
| ISW | Institute for the Study of War
| Others |
| ISW | Integrated Sachs Wolfe
| Others |
| ISW | Intensive Study Week
| Others |
| ISW | Inter Species Wrestling
| Others |
| ISW | International School Winterthur
| Others |
| ISW | International Secretarial for Water
| Others |
| ISW | International Silks and Woolens
| Others |
| ISW | International Social Work
| Others |
| ISW | International Spitfire Weekend
| Others |
| ISW | International Student Week
| Others |
| ISW | International Student Welcome
| Others |
| ISW | International Suit Wearhouse
| Others |
| ISW | Introductory Seminar Week
| Others |
| ISW | Invisible Sky Wizard
| Others |
| ISW | Islamic Society of Wichita
| Others |
| ISW | Italian Suit Warehouse
| Others |
| ISW | Wisconsin Rapids, Wisconsin USA
| Others |