| Acronym | Definition |
|---|
| HTO➣Happy to Oblige |
| HTO➣High Temperature Oxidation |
| HTO➣High Tibial Osteotomy |
| HTO➣Tritiated Water |
| HTO➣Habitual Traffic Offender (driving; various locations) |
| HTO➣Human, Technology and Organization |
| HTO➣Hudson Trail Outfitters (various locations) |
| HTO➣High-Tech Offensive (Bayern; software) |
| HTO➣Halal Transactions of Omaha (Omaha, NE) |
| HTO➣Hellenic Telecommunications Organisation SA (Greece) |
| HTO➣Hostile Take Over |
| HTO➣Hard to Operate (vehicle repair) |
| HTO➣Horizontal Take-Off |
| HTO➣Hydrogen Tritium Oxygen |
| HTO➣Hospital Transfer Order |
| HTO➣Highway Transportation Officer |