| 1 | NSA | Nile Safaris Aviation | Callsign: Nile Safaris, | SUD | AVCODES |
| 2 | NSA | Nile Safaris Aviation | | | ICAO1 |
| 3 | NSA | Norfolk Southern Railway Company | Real: NS | USA | TRAFFIC |
| 4 | NSAA | NORTHERN SALES | | | SCAC4 |
| 5 | NSAB | NORTH STAR ONE (1) AUTO SALES & REN | | | SCAC4 |
| 6 | NSAC | NORTH STAR AIR CARGO INC | | | SCAC4 |
| 7 | NSACZ | Miejskie Przedsiębiorstwo Komunikacyjne w Nowym Sączu | | PL | TRAFFIC |
| 8 | NSAE | NORTH SHORE AIR EXPRESS INC | | | SCAC3 |
| 9 | NSAI | NATIONAL SERV-ALL OF FORT WAYNE | | | SCAC3 |
| 10 | NSAI | NORTHSTAR AEROSPACE INC | | | SCAC4 |
| 11 | NSAJ | NOSAT | | | SCAC4 |
| 12 | NSAL | NORTE SUR AMERICANA LOGISTICS | | | SCAC3 |
| 13 | NSAR | NORTH STAR TRUCKING SERVICES INC | | | SCAC4 |
| 14 | NSAT | NAFTOMAR SHIPPING AND TRADING CO LT | | | SCAC3 |
| 15 | NSAT | NAFTOMAR SHIPPING AND TRADING CO LT | | | SCAC4 |
| 16 | NSAU | THE NATIONAL SHIPPING CO OF SAUDI ARABIA | | SA | BIC |
| 17 | NSAU | NATL SHIPPING OF SAUDI ARABIA | | | SCAC3 |
| 18 | NSAU | NATIONAL SHIPPING CO OF SAUDI ARABI | | | SCAC4 |
| 19 | NSAW | NORCO (SAGINAW) | | | SCAC4 |
| 20 | NSAX | National Steel Corp. | 1/1975; added 1/1976; 1/1980-7/2005 | | NAKINA |
| 21 | NSAX | National Steel Corp. | 1/75-7/2000 | | NRHS |
| 22 | NSAX | NATIONAL STEEL CORPORATION | | | PWRC |
| 23 | NSAX | National Steel Corporation | | | RSRV |
| 24 | NSAX | NATIONAL STEEL CORPORATION | | | SCAC4 |
