| 1 | GSS | Global Supply Systems Ltd. | Callsign: Jet Lift, Commenced operations on 29 June 2002. Ceased operation in 2014. Name changed from Nouvelleligne Ltd w.e.f. 31 January 2001. | GB | AVCODES |
| 2 | GSS | GSS Airline S.r.l. | Callsign: Cargo Bird, | RSM | AVCODES |
| 3 | GSS | Global Supply Systems | | | ICAO1 |
| 4 | GSS | GSMSTAD | | NL | TRAFFIC |
| 5 | GSSB | GLOBAL SHIPPING SERVICES | | | SCAC4 |
| 6 | GSSC | GOLDEN SPREAD SALES COMPANY | | | SCAC4 |
| 7 | GSSD | GROSS, DEWAYNE TRUCKING | | | SCAC4 |
| 8 | GSSF | GROSSE TRANSFER | | | SCAC4 |
| 9 | GSSH | GANSABRE SHIPPING S A | | | SCAC4 |
| 10 | GSSJ | GILL, S S TRANSPORTATION LLC | | | SCAC4 |
| 11 | GSSK | GRACE SERVICES S A | | | SCAC4 |
| 12 | GSSL | GARCIA SALINAS, SANTOS LUIS | | | SCAC4 |
| 13 | GSSN | G S & SONS TRUCKING | | | SCAC4 |
| 14 | GSSU | G2 OCEAN AS | | N | BIC |
| 15 | GSSV | GRIEG STAR SHIPPING AS (CONTAINER D | | | SCAC4 |
| 16 | GSSW | GRIEG STAR SHIPPING AS (OPEN HATCH | | | SCAC4 |
| 17 | GSSX | G.S.S. & M. Inc., Rail Division | 7/2005 (not listed) | | NAKINA |
| 18 | GSSX | Goar's Service & Supply | 4/1947-10/1957; eliminated 4/1961 | | NAKINA |
| 19 | GSSX | Republic Steel Corp. | 7/1937-4/1938 | | NAKINA |
| 20 | GSSX | Gulf States Steel Co. | 8/1920-7/1935 | | NAKINA |
| 21 | GSSX | Republic Steel Corp. (Gulf Steel Division) | Apr-38 | | NRHS |
| 22 | GSSX | Goar's Service & Supply | 1/52-10/57; eliminated 4/61 | | NRHS |
| 23 | GSSX | *REPUBLIC STEEL CORP. [GULF STATES STEEL CO.] | | | PWRC |
| 24 | GSSX | *GOAR'S SERVICE & SUPPLY | | | PWRC |
| 25 | GSSX | +G. S. S. & M. INC., RAIL DIV. {GOPHER STATE SCRAP AND METAL} | | | PWRC |
| 26 | GSSX | Gopher State Scrap and Metal | | | RSRV |
| 27 | GSSX | ALTER TRADING CORPORATION | | | SCAC4 |
| 28 | GSSY | GANSTAR SHIPPING S A | | | SCAC4 |
| 29 | GSSZ | GULF STATE STEEL, INC. | | | PWRC |
