| Acronym | Definition |
|---|
| HSW➣How Stuff Works (educational website) |
| HSW➣How Stuff Works (information website) |
| HSW➣Home Support Worker (healthcare; various organizations) |
| HSW➣Human Service Worker (various locations) |
| HSW➣Household Service Worker (various locations) |
| HSW➣Health, Safety and Welfare (OSHA) |
| HSW➣Health-Sector Wide (priority setting model) |
| HSW➣Health Solutions Wales (IT, telecommunications and consultancy services to the NHS in Wales) |
| HSW➣Had Sex With |
| HSW➣Historical Society of Washington (District of Columbia) |
| HSW➣Human Systems Wing (USAF) |
| HSW➣Howard Scott Warshaw (game designer) |
| HSW➣Hilton Sales Worldwide (hotels; various locations) |
| HSW➣Heavy Steep Water |
| HSW➣Home Service Worker |
| HSW➣Holevo-Schumacher-Westmoreland (information theory) |
| HSW➣Heat Sink Welding |
| HSW➣Harvard-Stanford-Wharton (top business schools) |
| HSW➣Half Sine Wave |
| HSW➣Health and Safety Works Ltd (UK) |
| HSW➣Helena Southwestern Railroad Company |
| HSW➣Health and Safety at Work Act of 1974 |
| HSW➣Hall Security Worker |
| HSW➣Horizontal Sliding Wedge (artillery breechblock) |
| HSW➣Hardware - Software - Wireless, Inc. |
| HSW➣Horse Show for Windows (FunnWare Development software) |
| HSW➣Happy Social Worker |