| Acronym | Definition |
|---|
| UTO | United Thank Offering |
| UTO | Universal Time Object |
| UTO | United Tajik Opposition |
| UTO | Upgrade Travel Option (air travel) |
| UTO | Unable to Obtain |
| UTO | Unit Table of Organization (US DoD) |
| UTO | University Technology Officer |
| UTO | United Towns Organization |
| UTO | Urinary Tract Obstruction |
| UTO | Unité Technique Opérationnelle (French: Operational Technical Unit; Cameroon) |
| UTO | Unit Task Organization |
| UTO | Usine de Traitement des Ordures (French: Waste Treatment Plant; Switzerland; also seen as UTOVS) |
| UTO | Universal Time Observed |
| UTO | Up The Owls (Sheffield Wednesday Football Club Fans) |
| UTO | Unpaid Time Off |
| UTO | Unit Task Order |
| UTO | User Test Organization |