| 1 | GPM | Grup Air-Med, S.A. | Callsign: Grupomed, | E | AVCODES |
| 2 | GPM | Grup Air-Med | | | ICAO1 |
| 3 | GPMB | Grand Port Maritime de Bordeaux | | FR | VKM |
| 4 | GPMC | GUS PECH MFG CO INC | | | SCAC4 |
| 5 | GPMG | G P M TRUCKING CORPORATION INC | | | SCAC4 |
| 6 | GPMI | GRUPO MEXICO | | | SCAC4 |
| 7 | GPML | GIRARD PALLET MANAGEMENT LLC | | | SCAC4 |
| 8 | GPMR | GRAEBEL/PITTSBURGH MOVERS INC | | | SCAC4 |
| 9 | GPMS | GRUPO MIALVA S A DE C V | | | SCAC4 |
| 10 | GPMT | G P M TRANSPORT INC | | | SCAC4 |
| 11 | GPMT | GP Papenburg Maschinentechnik GmbH | | DE | VKM |
| 12 | GPMU | {LLC "GAZPROMTRANS"};ZIPCODE=117420 | | RUS | BIC |
| 13 | GPMX | Georgia-Pacific LLC | added 4/2007 | | NAKINA |
| 14 | GPMX | Georgia-Pacific Corp. | eliminated 4/2007 | | NAKINA |
| 15 | GPMX | Georgia-Pacific Corp., Mid-Continent Wood Products Manufacturing Division | added 10/1986; added 7/1987; added 10/1989; 1/1994-7/2005 | | NAKINA |
| 16 | GPMX | Gas Properties Management Co. | added 7/1962; 7/1965-4/1970; eliminated 4/1973 | | NAKINA |
| 17 | GPMX | Union Oil Co. of California, Glacier Division | 1/1946-1/1950 | | NAKINA |
| 18 | GPMX | Glacier Production Co. | 7/1937-1/1945 | | NAKINA |
| 19 | GPMX | Glacier Production Co. | Apr-38 | | NRHS |
| 20 | GPMX | Gas Properties Management Co. | 7/65-4/70; eliminated 4/73 | | NRHS |
| 21 | GPMX | Georgia-Pacific Corp., Mid-Continent Wood Products Manufacturing Division | added 10/86; added 7/87; added 10/89; 1/94-7/2000 | | NRHS |
| 22 | GPMX | *UNION OIL CO. OF CALIFORNIA, GLACIER DIV. | | | PWRC |
| 23 | GPMX | *GAS PROPERTIES MANAGEMENT CO. | | | PWRC |
| 24 | GPMX | +GEORGIA PACIFIC LLC - MID-CONTINENT WOOD PRODS MFG DIV | | | PWRC |
| 25 | GPMX | Georgia-Pacific Corporation (Mid Continent Wood Products Manufacturing Division) | | | RSRV |
| 26 | GPMX | GEORGIA PACIFIC LLC | | | SCAC4 |
