| 1 | KMG | Kosmas Air | Callsign: Kosmas Cargo, Founded in 2004. AOC revoked in May 2008 | BIH | AVCODES |
| 2 | KMG | Kosmas Air | | | ICAO1 |
| 3 | KMGI | K M G INC | | | SCAC4 |
| 4 | KMGM | KAMIGUMI CO LTD | | | SCAC4 |
| 5 | KMGS | KNOWLTON MOVING SERVICE CORP | | | SCAC3 |
| 6 | KMGS | KEARNEY MOVING SERVICE | | | SCAC4 |
| 7 | KMGW | KIMBLE, GREGORY W | | | SCAC3 |
| 8 | KMGW | K M G BERNUTH INC | | | SCAC4 |
| 9 | KMGX | Twin Mountain Rock Co. | added 7/1991; 1/1994; eliminated 1/1997 | | NAKINA |
| 10 | KMGX | Twin Mountain Rock Co. | added 7/91; 1/94; eliminated 1/97 | | NRHS |
| 11 | KMGX | TWIN MOUNTAIN ROCK COMPANY | | | PWRC |
