| TWI | Office For Information Warfare Support (DIA) 
| Others |
| TWI | T Wave Inversion
| Others |
| TWI | Tactical weapon Industries
| Others |
| TWI | Tactical Writing Instrument
| Others |
| TWI | TaiWan International ( TWI International Taiwan, Inc.)
| Others |
| TWI | Tangible Wireless IMU
| Others |
| TWI | Technically Write It
| Others |
| TWI | Technologie und Wirtschaftspark Innsbruck
| Others |
| TWI | Telias Whisky Institute
| Others |
| TWI | Temporary Worker Initiative
| Others |
| TWI | Teruko Weinberg Inc
| Others |
| TWI | Thanksgiving Worship and Intercession
| Others |
| TWI | The Washington Independent
| Others |
| TWI | The Welding Institute
| Others |
| TWI | The Wetlands Initiative
| Others |
| TWI | The Work Institute
| Others |
| TWI | The Workshops Inc
| Others |
| TWI | The World Investigates
| Others |
| TWI | Think Without Ink
| Others |
| TWI | Tire Wear Indicator
| Others |
| TWI | Toast With Interest Toastmasters
| Others |
| TWI | Topographic Wetness Index
| Others |
| TWI | Totally With It
| Others |
| TWI | Training With Industry
| Others |
| TWI | Training Within Industry
| Others |
| TWI | Trans World International
| Others |
| TWI | Transitions of Western Illinois
| Others |
| TWI | Tread Wear Indicator
| Others |
| TWI | Two Way Immersion
| Others |
| TWI | Two Wire Interface
| Others |
| TWI | Two- Way Immersion
| Others |
| TWI | Welding Institute
| Others |