| 1 | GMI | Germania Fluggesellschaft mbH | IATA: ST, Callsign: Germania, Ceased operations on 05 February 2019. ICAO designator changed from GFG. Founded in 1986. | D | AVCODES |
| 2 | GMI | Germania | IATA: ST | | ICAO1 |
| 3 | GMI | Germania Airline | | D | TRAFFIC |
| 4 | GMIC | GALACTIC MARITIME INC | | | SCAC4 |
| 5 | GMID | G & M INDUSTRIES INC | | | SCAC4 |
| 6 | GMIE | GUIDAS MILK & ICE CREAM | | | SCAC4 |
| 7 | GMIF | GREENTECH MANUFACTURING INC | | | SCAC4 |
| 8 | GMIL | GRAMTER INTERNATIONAL (USA) CO LTD | | | SCAC4 |
| 9 | GMIN | GMI TRANSPORTATION | | | SCAC4 |
| 10 | GMIO | GROUPE MARODI INC | | | SCAC4 |
| 11 | GMIQ | GILSONITE MUSIC INDUSTRIES INC | | | SCAC4 |
| 12 | GMIT | GEMI TRUCKING INC | | | SCAC4 |
| 13 | GMIV | GLOBAL MARITIME INVESTMENTS LTD | | | SCAC4 |
| 14 | GMIW | GLAMOUR MARITIME INC | | | SCAC4 |
| 15 | GMIX | Chicago Freight Car Leasing Co. | added 10/1988; 1/1994-7/2005 | | NAKINA |
| 16 | GMIX | General Mills, Inc. | added 4/1979; 1/1980; eliminated 10/1983 | | NAKINA |
| 17 | GMIX | General Mills, Inc. | added 4/79; 1/80; eliminated 10/83 | | NRHS |
| 18 | GMIX | Chicago Freight Car Leasing Co. | added 10/88; 1/94-7/2000 | | NRHS |
| 19 | GMIX | *GENERAL MILLS, INC. | | | PWRC |
| 20 | GMIX | +CHICAGO FREIGHT CAR LEASING CO. | | | PWRC |
| 21 | GMIX | General Mills (Chicago Freight Car Leasing) | | | RSRV |
| 22 | GMIX | CHICAGO FREIGHT CAR LEASING CO | | | SCAC4 |
| 23 | GMIZ | GOOCH MILLING | | | PWRC |
