| Acronym | Definition |
|---|
| LTIR➣Lost Time Incident Rate |
| LTIR➣Lost Time Injury Rate |
| LTIR➣Long-Term Injured Reserve (professional sports) |
| LTIR➣Licensed Trustee in Insolvency and Restructuring (Canada) |
| LTIR➣Longer Term Investment Return |
| LTIR➣Long Terminal Inverted Repeats (genetics) |