| 1 | SGC | Southern Right Air Charter CC | Callsign: Southernright, | ZA | AVCODES |
| 2 | SGC | Spec Energy | Callsign: Spec Wings, | RSM | AVCODES |
| 3 | SGC | Southern Right Air Charter | | | ICAO1 |
| 4 | SGCB | SERROMAH SHIPPING BV | | | SCAC4 |
| 5 | SGCC | SEAGATE LOGISTICS LLC | | | SCAC4 |
| 6 | SGCD | SAN GREGORY CARTAGE INC | | | SCAC4 |
| 7 | SGCE | STAGE COACH CARTAGE AND DISTRIBUTIO | | | SCAC4 |
| 8 | SGCG | SNUG COTTAGE IMPORTS INC | | | SCAC4 |
| 9 | SGCH | STAGECOACH EXPRESS INC | | | SCAC4 |
| 10 | SGCI | SCNARRINGA GREENHOUSES LTD | | | SCAC4 |
| 11 | SGCJ | SUISSE GOLD CORP | | | SCAC4 |
| 12 | SGCL | SEAGULL CONTAINER LINE INC | | | SCAC4 |
| 13 | SGCM | STRANG CEDAR LIMITED | | | SCAC4 |
| 14 | SGCO | SOUTHERN PRIDE HOLDINGS LTD | | | SCAC4 |
| 15 | SGCPP | SAINT-GOBAIN CONSTRUCTION PRODUCTS POLSKA Sp. z o.o. | | PL | VKM |
| 16 | SGCR | SAILING CRUISE INC | | | SCAC4 |
| 17 | SGCS | SIGLER FREIGHT SERVICE | | | SCAC4 |
| 18 | SGCT | SUN ERGOS, A COMPANY OF THEATRE AND | | | SCAC4 |
| 19 | SGCU | SOGECO INTERNATIONAL SA | | CH | BIC |
| 20 | SGCW | STEINWEG, C (BALTIMORE) INC | | | SCAC4 |
| 21 | SGCX | Sungas Corp. of Florida | added 1/1974; 1/1975-7/2005 | | NAKINA |
| 22 | SGCX | Sungas Corp. of Florida | added 1/74; 1/75-7/2000 | | NRHS |
| 23 | SGCX | SUNGAS CORP OF FLORIDA | | | PWRC |
| 24 | SGCX | Sungas Corporation of Florida | | | RSRV |
| 25 | SGCX | SUNGAS CORP OF FLORIDA | | | SCAC4 |
| 26 | SGCY | SNIPES GENERAL CONTRACTING | | | SCAC4 |
| 27 | SGCZ | SOUTHWEST GRAIN CO. | | | PWRC |
