| Acronym | Definition |
|---|
| OWT | Overweight (finance) |
| OWT | Omega World Travel (travel agency) |
| OWT | Old Wives Tale |
| OWT | One Way Ticket |
| OWT | One World Trust (London, UK) |
| OWT | One World Telecommunications (Kennewick, WA) |
| OWT | Operation Warrior Trainer (US Army) |
| OWT | Our World Today (educational materials) |
| OWT | Offshore Wind Turbine (EU) |
| OWT | Oxygenator Water Technologies (Minnetonka, MN) |
| OWT | Offshore Wind Technologie, GmbH (Germany) |
| OWT | Organisation, Work & Technology |
| OWT | One Wheel Team (motorcycle stunt group) |
| OWT | One World Tree (genealogy) |
| OWT | One World Telecom |
| OWT | Open Windowing Toolkit (open source software) |
| OWT | Orthogonal Wavelet Transform |
| OWT | One-Way-Travel |
| OWT | Oily Waste Transfer |
| OWT | Orlando Wedding Team (Orlando, FL) |
| OWT | Overheard Wedding Twitter (blog) |
| OWT | One Way Transfer |
| OWT | Oman World Tourism (Oman) |
| OWT | Over Weight Truck |
| OWT | Optimal Wide Sole Trajectory Technology (Golf Research In Play) |
| OWT | Old Woman's Tooth (woodworking router plane) |
| OWT | Optimal Weighting Technology (golf clubs) |
| OWT | Operator Work Time |
| OWT | Operation Wallacea Trust (Indonesia) |
| OWT | Oil Well Tubing |
| OWT | Oxford Women's Training (UK) |
| OWT | Optus Wireless Telephone (Australia) |
| OWT | Ottapalam Welfare Trust (India) |
| OWT | One Way Transmission (telephony) |
| OWT | Outstanding Women of Today (award) |
| OWT | One Write Thing (online magazine) |
| OWT | Oasis Water Technologies (India) |
| OWT | Onsite Wastewater Trainee (wastewater treatment) |
| OWT | OVC (Orphan and Vulnerable Children) Wellbeing Tool (Catholic Relief Services) |
| OWT | Oconee Waste Transport, Inc. (Watkinsville, GA) |
| OWT | Outdoor West Texas Entertainment, Ltd. (hunting properties) |