LTIR
| 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) |