| Acronym | Definition |
|---|
| OTG | On-the-Go |
| OTG | On-The-Go (USB 2.0 specification) |
| OTG | Of the Guild (gaming) |
| OTG | Outside the Gates |
| OTG | Olive Tree Genealogy (est. 1996) |
| OTG | One Touch Gold (grill) |
| OTG | Outside Temperature Gauge (vehicle feature) |
| OTG | Own the Game (sports) |
| OTG | On the Ground (sales) |
| OTG | OverTheGun (YouTube personality) |
| OTG | on the Go |
| OTG | Oracle Transparent Gateway |
| OTG | Outside Temperature Gauge |
| OTG | Off the Ground (gaming) |
| OTG | Over the Glasses (goggle type) |
| OTG | On The Green |
| OTG | Off the Grid |
| OTG | Of the Gods |
| OTG | Oficina de Treball de la Generalitat (Catalonia) |
| OTG | OpenTheGovernment.org |
| OTG | Oh Thank God |
| OTG | Online Travel Group (various locations) |
| OTG | On The Grid |
| OTG | Operations and Technology Group (Microsoft) |
| OTG | Organic Trade Group |
| OTG | One True God |
| OTG | Old Timers Guild |
| OTG | Operational Target Graphic (US DoD) |
| OTG | Odense Tekniske Gymnasium (Danish: Odense Technical College; Odense, Denmark) |
| OTG | Oxford Theatre Guild (est. 1955; UK) |
| OTG | Older Than God |
| OTG | Originating Trunk Group |
| OTG | Onward to Golgotha (Incantation album) |
| OTG | Officer Training Group |
| OTG | Oven Toast(er) Grill |
| OTG | Operations Tactics Group |
| OTG | Operational Tactics Guide |
| OTG | Output Transfer Gate (computing) |
| OTG | Optimal Treatment Guidelines |
| OTG | OTH (Over-the-Horizon) Targeting Gold (message format) |
| OTG | Our Technical Guys, Ltd. (est. 2008; UK) |
| OTG | Original Tool Gangster |
| OTG | OilTechnoGroup LLC (Occidental Resources, Inc.; Salt Lake City, UT) |