| 1 | GPR | GPM Aeroservicio, S.A. de C.V. | Callsign: Gpm Aeroservicio, | MEX | AVCODES |
| 2 | GPR | GPM Aeroservicio | | | ICAO1 |
| 3 | GPR | GREAT PLAINS RAILROAD | | | PWRC |
| 4 | GPR | GP Rail Cargo | | RO | TRAFFIC |
| 5 | GPRB | GETHSEMANE PROJECT | | | SCAC4 |
| 6 | GPRN | GLOBAL PROPANE | | | SCAC4 |
| 7 | GPRS | GULF PUERTO RICO LINES | | | PWRC |
| 8 | GPRU | GUINESS, ARTHUR SON AND CO LTD | | | SCAC4 |
| 9 | GPRX | Quartermaster Corps, War Department, U.S.A. | 7/1937-1/1941 | | NAKINA |
| 10 | GPRX | United States of America (War Department, U.S.A.) | 7/1935 | | NAKINA |
| 11 | GPRX | United States of America | 8/1920-7/1932 | | NAKINA |
| 12 | GPRX | Quartermaster Corps, War Department, U.S.A. | Apr-38 | | NRHS |
| 13 | GPRX | UNITED STATES OF AMERICA WAR DEPARTMENT (WW II AND EARLIER) | | | PWRC |
