| Acronym | Definition |
|---|
| WTI | West Texas Intermediate |
| WTI | With The Idea (used in chess to point to the idea behind a specific move) |
| WTI | Waterloo (Amtrak station code; Waterloo, IN) |
| WTI | Witchita Technical Instute (est. 1954; Wichita, KS) |
| WTI | Wanted to Interview (police incident code; New Zealand) |
| WTI | Weapons and Tactics Instructor (USMC) |
| WTI | Weapons Technical Intelligence |
| WTI | Western Transportation Institute (Montana State University) |
| WTI | Whatever This Is |
| WTI | World Tribunal on Iraq |
| WTI | Withlacoochee Technical Institute |
| WTI | Waste Technologies Industries |
| WTI | World Trade Index |
| WTI | Wolverine Tube, Inc. (Decatur, AL) |
| WTI | Web Telephony Integration |
| WTI | Write-Through Invalidate (computing) |
| WTI | Warehouse Technology Initiative (Oracle) |
| WTI | Winding Temperature Indicator |
| WTI | Wire Thread Insert |
| WTI | Weapon/Target Interaction |
| WTI | Windle Trust International (UK) |
| WTI | Weapons Training Instruction |
| WTI | Weapon Train Indicator |
| WTI | Weapons Tactics Instructions |