| 1 | SGV | Aerosegovia, S.A. | Callsign: Segovia, | NIC | AVCODES |
| 2 | SGV | Aerosegovia | | | ICAO1 |
| 3 | SGVA | STANDAGE COURIER SERVICE | | | SCAC4 |
| 4 | SGVI | SUGAR SERVICES LLC | | | SCAC4 |
| 5 | SGVS | STORAGE SERVICES INC | | | SCAC4 |
| 6 | SGVY | Saginaw Valley Ry. Co., Inc. | 1/1994-7/2000; eliminated 10/2004 | | NAKINA |
| 7 | SGVY | Huron and Eastern Ry. Co., Inc. | added 10/2004; 7/2005 | | NAKINA |
| 8 | SGVY | Saginaw Valley Ry. Co., Inc. | 1/94-7/2000 | | NRHS |
| 9 | SGVY | HURON & EASTERN RWY. CO. [SAGINAW VALLEY RAILWAY COMPANY, INC.] | | | PWRC |
| 10 | SGVY | Saginaw Valley Railway | | | RSRV |
