| Abbreviation | Definition |
|---|---|
| RLTO | Reasonably Likely To Occur |
| RLTP | Road Less Traveled Productions |
| RLTT | Repeated Load Triaxial Testing |
| RLTT | Repeated Load Triaxial Tests |
| RLTW | Rangers Lead The Way |
| RLU | Laser Unit |
| RLU | Read Log Update |
| RLU | Relative Light Units |
| RLU | Relative Luciferase Units |
| RLU | Relative Luminescence Units |
| RLU | Relative luminometer units |
| RLU | Removable Logger Unit |
| RLU | Report Layout Utility |
| RLU | Resource Land Unit |
| RLUD | Resolving Land Use Disputes |
| RLV | Rancho Loma Vineyards |
| RLV | Reading Listening and Viewing |
| RLV | Real Life Video |
| RLV | Recherches Linguistiques de Vincennes |
| RLV | Restrained |