| Abbreviation | Definition |
|---|---|
| RLIP | Recreation and Leisure Infrastructure |
| RLIP | regional logistics information platform |
| RLIP | Requested Line Item Performance |
| RLIP | Rural Living Infrastructure Program |
| RLK | Rana Larval Keratin |
| RLK | Randallstown Lock and Key |
| RLK | Range Light Keepers |
| RLK | Real Life Knowledge |
| RLK | Related Links in Karstspace |
| RLK | Resting Lymphocyte Kinase |
| RLK | Richard Laymon Kills |
| RLK | Roger Lisa and Katie |
| RLK | Rubric Lois King |
| RLL | Rahal Letterman Lanigan |
| RLL | Ramapo Little League |
| RLL | Ranbaxy Laboratories Limited |
| RLL | Read Listen and Learn |
| RLL | Real Larry Lujack |
| RLL | Record Linking Lab |
| RLL | Reduced Lower Limit |