| Acronym | Definition |
|---|
| TNR➣Trap-Neuter-Return (controlling feral cats) |
| TNR➣The New Republic |
| TNR➣Times New Roman (font) |
| TNR➣Transportation and Natural Resources (Texas) |
| TNR➣The Natural Resource |
| TNR➣The Next Revolution |
| TNR➣True Negative Rate (statistics) |
| TNR➣Antananarivo, Madagascar - Ivato (Airport Code) |
| TNR➣Tonic Neck Reflex |
| TNR➣The Ninja's Return (gaming) |
| TNR➣The Ninja-RPG (online game) |
| TNR➣Terabit Network Router (Pluris) |
| TNR➣Transmit Not Ready |
| TNR➣Titulaire Non Résident (French: Non-Resident Holder) |
| TNR➣Thermonuclear Reaction |
| TNR➣Time-Not-Ready |
| TNR➣Thermal Neutron Radiography |
| TNR➣Temperature of No Return |
| TNR➣Threshold-to-Noise Ratio |
| TNR➣Transmitted Noise Reduction |
| TNR➣Terminal Network Replacement |
| TNR➣Trinuclear Repeat |