| 1 | SUN | Antillana De Navegacion Aerea | | | ICAO1 |
| 2 | SUN | Sunset Ry. Co. | 1/1975-7/2005 | | NAKINA |
| 3 | SUN | Sunset Ry. Co. | 1/75-7/2000 | | NRHS |
| 4 | SUN | SUNSET RAILWAY CO. | | | PWRC |
| 5 | SUN | Sunset Railway | | | RSRV |
| 6 | SUNB | SUNBURY TRANSPORT LIMITED | | | SCAC1 |
| 7 | SUNB | SUNBURY TRANSPORT LIMITED | | | SCAC4 |
| 8 | SUND | SUN DELIVERY INC | | | SCAC4 |
| 9 | SUNDCT | Sunderland Corporation Transport | | GB | TRAFFIC |
| 10 | SUNDS | Sundance Stage Lines | | US-CA | TRAFFIC |
| 11 | SUNFAI | Sun Fai Transportation Co | City: Hong Kong | HK | TRAFFIC |
| 12 | SUNG | SUNSHINE SHIPPING INC | | | SCAC4 |
| 13 | SUNI | SUNNY CARRIER INC | | | SCAC4 |
| 14 | SUNJ | SUPERIOR CONTAINER SERVICES LTD | | | SCAC4 |
| 15 | SUNN | SUNSHINE BULK COMMODITIES INC | | | SCAC4 |
| 16 | SUNO | SUNSAM TRANSPORTATION INC | | | SCAC4 |
| 17 | SUNQ | SUN-NORTH SYSTEMS LTD | | | SCAC4 |
| 18 | SUNR | SUNRISE DISTRIBUTION INC | | | SCAC4 |
| 19 | SUNR | SUNRAIL GbR | | DE | VKM |
| 20 | SUNS | SUNSET EXPRESS INC | | | SCAC4 |
| 21 | SUNT | SUNRISE TRANSPORTATION SERVICES | | | SCAC4 |
| 22 | SUNT | Sunray Travel | | GB | TRAFFIC |
| 23 | SUNTR | Sun Tran | | USA | TRAFFIC |
| 24 | SUNU | NICHIRIN GROUP CO | | J | BIC |
| 25 | SUNV | SUNSHINE CATTLE CO | | | SCAC4 |
| 26 | SUNW | SUNOCO INC (R&M) | | | SCAC4 |
| 27 | SUNX | Sun Oil Co. | 7/1930-4/1970; eliminated 7/1970; added 7/1971; eliminated 1/1972 | | NAKINA |
| 28 | SUNX | Sun Oil Co. of Pennsylvania | added 1/1972; 1/1975; eliminated 4/1978 | | NAKINA |
| 29 | SUNX | Sun Petroleum Products Co., a Division of Sun Oil Co. of Pennsylvania | added 4/1978; 1/1980; eliminated 4/1982 | | NAKINA |
| 30 | SUNX | Sun Refining and Marketing Co. | added 4/1982; 1/1994-7/2000; eliminated 4/2002 | | NAKINA |
| 31 | SUNX | Sunoco Inc. (R&M) | added 4/2002; 7/2005 | | NAKINA |
| 32 | SUNX | Sun Oil Co. | 4/38-4/70; eliminated 7/70; eliminated 1/72 | | NRHS |
| 33 | SUNX | Sun Oil Co. of Pennsylvania | added 1/72; 1/75; eliminated 4/78 | | NRHS |
| 34 | SUNX | Sun Petroleum Products Co., a Division of Sun Oil Co. of Pennsylvania | added 4/78; 1/80; eliminated 4/82 | | NRHS |
| 35 | SUNX | Sun Refining and Marketing Co. | added 4/82; 1/94-7/2000 | | NRHS |
| 36 | SUNX | SUNOCO INC. (SUN REFINING & MARKETING CO.,SUN OIL COMPANY OF PENNSYLVANIA0 | | | PWRC |
| 37 | SUNX | Sun Refining and Marketing | | | RSRV |
| 38 | SUNX | SUNOCO INC (R & M) | | | SCAC4 |
| 39 | SUNZ | SUN OIL | | | PWRC |
