| Abbreviation | Definition |
|---|---|
| MRDD | Don Diego, Costa Rica |
| MRDK | Drake, Costa Rica |
| MRDO | Diecicho, Costa Rica |
| MRE | Mara Lodges, Kenya |
| MREA | Estero Azul, Costa Rica |
| MREC | El Carmen, Costa Rica |
| MRER | El Ron Ron, Costa Rica |
| MRET | Esterillos, Costa Rica |
| MRF | Marfa Municipal Airport, Marfa, Texas USA |
| MRFD | Finca Delicias, Costa Rica |
| MRFI | Finca 10, Costa Rica |
| MRFL | Flamengo, Costa Rica |
| MRFP | Finca la Promesa, Costa Rica |
| MRFS | Finca 63, Costa Rica |
| MRG | Mareeba, Queensland, Australia |
| MRGA | Garza, Costa Rica |
| MRGF | Golfito, Costa Rica |
| MRGP | Guapiles, Costa Rica |
| MRGT | Guatuso, Costa Rica |
| MRGU | Guanacaste, Costa Rica |