| 1 | SKG | Sky Gabon S.A. | IATA: GV, Callsign: Sky Gabon, IATA Prefix: 536, | G | AVCODES |
| 2 | SKG | Skycraft Air Transport, Inc. | IATA: 9F, Callsign: Skycraft Canada, Designator recalled by IATA | CDN | AVCODES |
| 3 | SKG | Skycraft Air Transport | | | ICAO1 |
| 4 | SKG | Srbija Kargo | | SR | TRAFFIC |
| 5 | SKGC | S&S TRUCKING CO | | | SCAC1 |
| 6 | SKGC | SAMBRAILO PACKAGING | | | SCAC4 |
| 7 | SKGE | SHAKER GROUP INC | | | SCAC4 |
| 8 | SKGF | S-T TRUCKING INC | | | SCAC4 |
| 9 | SKGF | Ground Forces of the Slovak Republic | | SK | TRAFFIC |
| 10 | SKGH | SKYLIGHT TRANSPORT | | | SCAC4 |
| 11 | SKGJ | SCK LOGISTICS | | | SCAC4 |
| 12 | SKGK | SOUTHERN TRUCKING & TRANSPORTATION | | | SCAC4 |
| 13 | SKGM | SEATANKERS MANAGEM | | | SCAC4 |
| 14 | SKGO | SHAMROCK AIR CARGO | | | SCAC1 |
| 15 | SKGP | SPT LTD | | | SCAC4 |
| 16 | SKGR | STOCK GRAIN INC | | | SCAC4 |
| 17 | SKGS | SKAGGS TRUCKING INC | | | SCAC4 |
| 18 | SKGT | SKAGIT GARDENS INC | | | SCAC4 |
| 19 | SKGV | S E L TRUCKING INC | | | SCAC4 |
| 20 | SKGW | S & B TRUCKING OF WINDSOR CORP | | | SCAC4 |
| 21 | SKGX | Sibley Railcar & Parts, Inc. | 7/2000-7/2005 (not listed) | | NAKINA |
| 22 | SKGX | Sibley Railcar & Pats, Inc. | Jul-00 | | NRHS |
| 23 | SKGX | SIBLEY RAILCAR & PARTS INC. | | | PWRC |
| 24 | SKGX | Sibley Railcar and Parts | | | RSRV |
| 25 | SKGX | SIBLEY RAILCAR & PARTS INC | | | SCAC4 |
