| 1 | SEY | Air Seychelles Limited | IATA: HM, Callsign: Seychelles, IATA Prefix: 061, | SY | AVCODES |
| 2 | SEY | Air Seychelles | IATA: HM | | ICAO1 |
| 3 | SEYC | SEAY CORPORATION | | | SCAC4 |
| 4 | SEYE | SEMO EXPRESS LOGISTICS LLC | | | SCAC4 |
| 5 | SEYI | SHACKLEFORD ENERGY INC | | | SCAC4 |
| 6 | SEYM | SEYM | | | SCAC4 |
| 7 | SEYO | SEIYO SHIPPING COMPANY LTD | | | SCAC4 |
| 8 | SEYQ | SERVRITE TRANSYSTEM INC | | | SCAC4 |
| 9 | SEYS | STERRY STREET AUTO SALES INC | | | SCAC4 |
| 10 | SEYT | STEEL CITY TRANSPORT | | | SCAC4 |
| 11 | SEYU | SEYCHELLES PETROLEUM COMPANY LTD | | SY | BIC |
| 12 | SEYU | SEYCHELLES PETROLEUM COMPANY LTD | | | SCAC4 |