| IWS | i-Planet Web Server 
| Others |
| IWS | Image Web Server
| Others |
| IWS | Imaginary Web Server
| Others |
| IWS | In-water Survey
| Others |
| IWS | Increased Wasteland Spawns
| Others |
| IWS | Incredible Westmount Sensations
| Others |
| IWS | Industrial Waste and Salvage
| Others |
| IWS | Industrial Wastewater Solutions
| Others |
| IWS | Industrial Water Supply
| Others |
| IWS | Infantry Weapon System
| Others |
| IWS | Information Warfare Site
| Others |
| IWS | Inside Writing Skills
| Others |
| IWS | Instant Wholesale Service
| Others |
| IWS | Institute for Watershed Studies
| Others |
| IWS | Institute for Wildlife Studies
| Others |
| IWS | Institute for Workplace Studies
| Others |
| IWS | Institute For Worship Studies
| Others |
| IWS | Institute of Watershed Studies
| Others |
| IWS | Institute of Wilderness Studies
| Others |
| IWS | Instructional and Web Services
| Others |
| IWS | Instructional Web Sites
| Others |
| IWS | Instrument Work Stations
| Others |
| IWS | Integrated Warfare Systems
| Others |
| IWS | Integrated Warrior System
| Others |
| IWS | Integrated Waste Solutions
| Others |
| IWS | Integrated Waste Solutions Integrated Waste Solutions
| Others |
| IWS | Integrated Weapons System
| Others |
| IWS | Integrated Web Strategy
| Others |
| IWS | Integrated Wellness Solutions
| Others |
| IWS | Integrated Work Station
| Others |
| IWS | Integrated Work Systems
| Others |
| IWS | Integration Workload Statistics
| Others |
| IWS | Intelligent Warning System
| Others |
| IWS | Intelligent Watering System
| Others |
| IWS | Intelligent Work System
| Others |
| IWS | Intelligent WorkStation
| Others |
| IWS | interaction with Spt6
| Others |
| IWS | Interactive Wheel System
| Others |
| IWS | Intercontinental Warranty Services
| Others |
| IWS | Interior Woodworking Specialists
| Others |
| IWS | Interior Workplace Solutions
| Others |
| IWS | Internal Web server
| Others |
| IWS | Internal Working Surfaces
| Others |
| IWS | International Warehouse Services
| Others |
| IWS | International Warehousing Services
| Others |
| IWS | International Warranty Service
| Others |
| IWS | International watercolor society
| Others |
| IWS | International Wealth Success
| Others |
| IWS | International Web Services
| Others |
| IWS | International Weighing Systems
| Others |
| IWS | International Wireless Symposium
| Others |
| IWS | International Wool Standard
| Others |
| IWS | International Wrestling Syndicate
| Others |
| IWS | Internet Web Server
| Others |
| IWS | Internet World Statistics
| Others |
| IWS | Internet Wrestling Syndicate
| Others |
| IWS | Interstate Waste Services
| Others |
| IWS | Intranet Web Services
| Others |
| IWS | Intuitive Web Solutions
| Others |
| IWS | Irish Water Spaniel
| Others |
| IWS | Island Water Sports
| Others |
| IWS | West Houston Airport, Houston, Texas USA
| Others |
| IWS | WWU Institute for Watershed Studies
| Others |