| 1 | RGP | River State Government of Nigeria | Callsign: Garden City, | WAN | AVCODES |
| 2 | RGP | River State Government of Nigeria | | | ICAO1 |
| 3 | RGPA | RODRIGUEZ GUTIERREZ, PATRICIA | | | SCAC4 |
| 4 | RGPE | RGP ENTERPRISES INC | | | SCAC4 |
| 5 | RGPI | RADIX GROUP INTERNATIONAL | | | SCAC3 |
| 6 | RGPL | RANGER PETROLEUM LLC | | | SCAC4 |
| 7 | RGPN | RE-GAL TRANSPORTATION INC | | | SCAC3 |
| 8 | RGPO | R G TRANSPORT INC | | | SCAC3 |
| 9 | RGPO | R G TRANSPORT LLC | | | SCAC4 |
| 10 | RGPQ | R T I GROUP INC | | | SCAC4 |
| 11 | RGPR | RED DOG CORPORATION | | | SCAC3 |
| 12 | RGPS | RGP TRANSPORTES | | | SCAC4 |
| 13 | RGPX | Royal Gas Products Corp. | added 4/1960; 4/1961; eliminated 10/1961 | | NAKINA |
| 14 | RGPX | Royal Gas Products Corp. | Apr-61 | | NRHS |
| 15 | RGPX | ROYAL GAS PRODUCTS CORP. | | | PWRC |
