| 1 | SHM | Sheltam Aviation CC | Callsign: Sheltam, | ZA | AVCODES |
| 2 | SHM | Sheltam Aviation | | | ICAO1 |
| 3 | SHM | SHALIMAR TOURS & CHARTER | | | SCAC4 |
| 4 | SHM | Stoomtram Hoorn-Medemblik | | NL | TRAFFIC |
| 5 | SHM | Stiftung Hamburg Maritim | | DE | VKM |
| 6 | SHMA | STEELHEAD MARINE LTD | | | SCAC4 |
| 7 | SHMB | SHERMAN BROS. HEAVY TRUCKING, INC | | | SCAC1 |
| 8 | SHMB | S B INC | | | SCAC4 |
| 9 | SHMC | SCHMIEDING, H C PRODUCE INC | | | SCAC4 |
| 10 | SHMD | SHAMROCK OF MICHIGAN LTD | | | SCAC4 |
| 11 | SHME | SHAMGA | | | SCAC4 |
| 12 | SHMF | STREICHER MOBILE FUELING INC | | | SCAC4 |
| 13 | SHMG | SHOWA LINE, LTD. | | | PWRC |
| 14 | SHMM | SHELLEY MACHINE & MARINE | | | SCAC4 |
| 15 | SHMQ | SHATAM TRUCKING | | | SCAC4 |
| 16 | SHMR | SHETLER, MYLES R | | | SCAC4 |
| 17 | SHMU | SACHEM JAPAN GODO KAISHA | | J | BIC |
| 18 | SHMV | SHOMOVE | | | SCAC4 |
| 19 | SHMX | SSP HISTORICAL SOCIETY & MIDLAND RAILROAD HISTORICAL ASSOCIATION | | | PWRC |
