| 1 | SHI | Seoul Air International | Callsign: Seoul Air, | ROK | AVCODES |
| 2 | SHI | Sepehran Airlines | IATA: IS, Callsign: Shirazi, | IR | AVCODES |
| 3 | SHI | Seoul Air International | | | ICAO1 |
| 4 | SHI | SHERIDAN-INDIANAP | | | SCAC4 |
| 5 | SHIA | SHEROUTE INC | | | SCAC4 |
| 6 | SHIB | SHINN, BEN TRUCKING INC | | | SCAC4 |
| 7 | SHIC | SHICKS BOB AUTO SERVICE | | | SCAC4 |
| 8 | SHID | SHIPPERS DISPATCH INC | | | PWRC |
| 9 | SHID | SKY-HI INDUSTRIES LTD | | | SCAC4 |
| 10 | SHIE | SOUTHLAND HAULING INC | | | SCAC4 |
| 11 | SHIL | SUN HILL TRUCKING INC | | | SCAC4 |
| 12 | SHIM | SHIMANO CANADA LTD | | | SCAC4 |
| 13 | SHIM | Shimabara Railway | | J | TRAFFIC |
| 14 | SHIMO | Shimotsui Railway | | J | TRAFFIC |
| 15 | SHIN | Shinano Railway Company | | J | TRAFFIC |
| 16 | SHINB | Shin-Shin Bus | | RC | TRAFFIC |
| 17 | SHINH | Shinano Railway (historical) | 1911 - 1937 | J | TRAFFIC |
| 18 | SHINKI | Shinki Bus | | J | TRAFFIC |
| 19 | SHIO | SHIPPERS OVERLOAD DELIVERY | | | SCAC4 |
| 20 | SHIP | SHIPPERS CAR LINE | | | PWRC |
| 21 | SHIP | SHIPCRAFT CARRIERS A/S COPENHAGEN | | | SCAC4 |
| 22 | SHIR | SHIPPELT TRANSPORT LTD | | | SCAC4 |
| 23 | SHIR | Schempp-Hirth Flugzeugbau GmbH | | D | TRAFFIC |
| 24 | SHIU | SHIPLILLY LATAM S.R.L. | | PA | BIC |
| 25 | SHIU | SHIRAN CONTAINER LEASING (PRIVATE) | | | SCAC4 |
| 26 | SHIV | S & H TRANSPORT LTD | | | SCAC4 |
| 27 | SHIY | SUNRISE HELICOPTERS INC | | | SCAC4 |
| 28 | SHIZ | ST. HILAIRE ELEVATOR | | | PWRC |
| 29 | SHIZ | Shizuoka Railway | | J | TRAFFIC |
| 30 | SHIZJ | Shizutetsu Justline | | J | TRAFFIC |
