| Acronym | Definition |
|---|
| GTO | Gran Turismo Omologato (Ferrari & Pontiac models) |
| GTO | Go To |
| GTO | Guanajuato (México) |
| GTO | Greater Than One (various locations) |
| GTO | Getting to Outcomes (various locations) |
| GTO | Groothandel Truck Onderdelen (Dutch: Wholesale Truck Parts) |
| GTO | Great Teacher Onizuka (Japanese series) |
| GTO | Getting Too Old |
| GTO | Game Theory Optimal (poker) |
| GTO | Gran Turismo Omologato |
| GTO | Guide to Operations |
| GTO | Geosynchronous Transfer Orbit |
| GTO | Gate Turn-Off thyristor |
| GTO | Geostationary Transfer Orbit |
| GTO | Gas to Olefins |
| GTO | Golgi Tendon Organ (anatomy) |
| GTO | Group Training Organisations (Australia) |
| GTO | Geographic Targeting Order |
| GTO | Gomer Tip Over (medical slang) |
| GTO | Good Time Oldies |
| GTO | General Telecommunications Organization |
| GTO | German Toilet Organization (Berlin, Germany) |
| GTO | Grosser Tiegel Offset (Heidelberger Druckmaschinen AG) |
| GTO | Get Tools Out (car slang) |
| GTO | Gas, Tires & Oil |
| GTO | Guaranteed Time Observer |
| GTO | Gas Transmission Office |
| GTO | Gorontalo, Indonesia - Tolotio (Airport Code) |
| GTO | Group Technology & Operations |
| GTO | Gate Turn-Off Switch |
| GTO | Grand Tourisme de l'Ouest (French automobile dealer) |
| GTO | Guaranteed Observing Time |
| GTO | Gets Towed Often (cars) |
| GTO | Guaranteed Term Option |
| GTO | Global Tax Outsourcing |
| GTO | Grand Touring Option (Pontiac) |
| GTO | Gross Turn Over (rate) |
| GTO | Global Threat Overview |
| GTO | Gathering of the Triumvirate of Om |
| GTO | General Text Output |