| Abbreviation | Definition |
|---|---|
| RTD | Rotunda, Florida USA |
| RTG | Ruteng, Indonesia |
| RTM | Rotterdam, Netherlands |
| RTN | Raton, New Mexico USA |
| RTS | Rottnest Island, Western Australia, Australia |
| RTW | Saratov, Russia |
| RTY | Merty, South Australia, Australia |
| RUA | Arua, Uganda |
| RUH | Riyadh, Saudi Arabia |
| RUI | Ruidoso, New Mexico USA |
| RUK | Rukumkot, Nepal |
| RUM | Rumjartar, Nepal |
| RUN | St. Denis de la Reunion, Indian Ocean |
| RUP | Rupsi, India |
| RUQ | Rowan County Airport, Salisbury, North Carolina USA |
| RUR | Rurutu, French Polynesia, Tubuai Islands |
| RUS | Marau Island, Solomon Islands |
| RUT | Rutland State Airport, Rutland, Vermont USA |
| RUU | Ruti, Papua New Guinea |
| RUV | Rubelsanto, Guatemala |