| 1 | KEIK | KLEIN TRUCKING | | | SCAC3 |
| 2 | KEIK | KALCO EXPRESS INC | | | SCAC4 |
| 3 | KEIKYU | Keikyu Corporation | | J | TRAFFIC |
| 4 | KEIKYUB | Keihin Express Bus Company | Owner: Keikyu Corporation | J | TRAFFIC |
| 5 | KEIKYUH | Haneda Keikyu Bus Company | Owned by the Keikyu Corporation | J | TRAFFIC |
| 6 | KEIKYUT | Keikyu Tourist Bus Limited | | J | TRAFFIC |
| 7 | KEIKYUY | Yokohama Keikyu Bus Company | Owned by the Keikyu Corporation, subsidiary of the Keihin Kyuko Bus Co., Ltd. | J | TRAFFIC |
