| Acronym | Definition |
|---|
| HTR | Home Theater Receiver |
| HTR | Heater |
| HTR | Heated Towel Rail |
| HTR | Hire to Retire |
| HTR | Home Theatre |
| HTR | High Temperature Reactor |
| HTR | Harvard Theological Review (Cambridge, MA) |
| HTR | Hard-To-Reach |
| HTR | Heavy Truck |
| HTR | Hockey Trade Rumors (fan website) |
| HTR | Heavy Tactical Rifle (H-S Precision, Inc.) |
| HTR | Hemolytic Transfusion Reaction (blood transfusion) |
| HTR | Hunter: the Reckoning (White-Wolf game) |
| HTR | Registered Horticultural Therapist |
| HTR | Health Transition Review (journal) |
| HTR | Hellenic Technology of Robotics |
| HTR | Honda Türkiye AS (Turkish car manufacturer) |
| HTR | How to Reproduce (software defects) |
| HTR | Heavy Technical Rescue (fire services; Virginia) |
| HTR | Household Tracking Report |
| HTR | High Technology Rotor |
| HTR | Hardware Trouble Report |
| HTR | Hack the Razr (website) |
| HTR | Horticulture Therapist Registered |
| HTR | Hit the Roof Recordings (UK) |
| HTR | Honda Trouble Report |