| 1 | SHA | Servicio Aereo de Honduras, S.A. (SAHSA) | Callsign: Sierra Hotel, Desigantor SH recalled by IATA. Ceased Operations during 1993 | HN | AVCODES |
| 2 | SHA | Servicio Aereo de Honduras, S.A. (SAHSA) | IATA: SH, Callsign: Sierra Hotel, Desigantor SH recalled by IATA | HN | AVCODES |
| 3 | SHA | Shree Airlines Pvt. Ltd. | IATA: N9, Callsign: Shree-Air, Founded in 1999. | NEP | AVCODES |
| 4 | SHA | Lynx Aviation, Inc. | Callsign: Shasta, ICAO designator changed to SSX. Subsidiary of Republic Airways Holdings, Inc. | USA | AVCODES |
| 5 | SHAB | SHAPP INTERNATIONAL TRADING INC | | | SCAC4 |
| 6 | SHAD | SHADAI TRANSPORTES TERRESTRES SA DE | | | SCAC4 |
| 7 | SHAF | SHAFFER TRUCKING INC. | | | PWRC |
| 8 | SHAH | SHAUGHNESSY AND AHERN COMPANY | | | SCAC4 |
| 9 | SHAI | SHIP ART INTERNATIONAL INC | | | SCAC4 |
| 10 | SHAK | SHAKER GROUP INC | | | SCAC4 |
| 11 | SHAM | SINGING SHAMAN TRADERS | | | SCAC4 |
| 12 | SHAN | SHANAHAN MOTOR LINES | | | PWRC |
| 13 | SHAN | SHUBERT HAULING | | | SCAC4 |
| 14 | SHANG | Shanghai Metro | City: Shanghai | PRC | TRAFFIC |
| 15 | SHAP | SHAPIRO BROS INC | | | SCAC4 |
| 16 | SHAQ | SHORE LOGISTICS LLC | | | SCAC4 |
| 17 | SHAS | SHARP MANUFACTURING | | | SCAC4 |
| 18 | SHAT | SHAWMUT TRANSP CO INC | | | PWRC |
| 19 | SHAT | SHALE TRUCKING INC | | | SCAC4 |
| 20 | SHAT | Shatty Railway | | FAN | TRAFFIC |
| 21 | SHAU | SHAL SEA SHIPPING LLC | | UAE | BIC |
| 22 | SHAU | M.R. SHAH LOGISTICS PVT LTD | | | SCAC4 |
| 23 | SHAW | SHAW ENTERPRISE INC | | | SCAC4 |
| 24 | SHAX | Sherwin Alumina Co. | added 4/2002; 7/2005 | | NAKINA |
| 25 | SHAX | SHERWIN ALUMINA CO. | | | PWRC |
| 26 | SHAX | Sherwin Alumina | | | RSRV |
| 27 | SHAX | SHERWIN ALUMINA COMPANY | | | SCAC4 |
| 28 | SHAY | SCHNEIDER, HARRY TRUCKING INC | | | SCAC4 |
| 29 | SHAZ | SHAW INDUSTRIES | | | PWRC |
| 30 | SHAZ | SHAW INDUSTRIES INC | | | SCAC4 |
