| 1 | OMB | Omni-blu Aviation Limited | IATA: O7, Callsign: Omniblu, | WAN | AVCODES |
| 2 | OMB | Odense - Middelfart Banen (Nordvestfyenske Jernbane) | 1911 - 1966 | DK | jernbanen.dk |
| 3 | OMB | Odense - Middelfart Banen (Nordvestfyenske Jernbane) | 1911 - 1966 | DK | TRAFFIC |
| 4 | OMBC | ORIGINAL MAPLE BAT CORPORATION, THE | | | SCAC4 |
| 5 | OMBS | OMNIBLUE SHIPPING INC | | | SCAC4 |
| 6 | OMBT | OMNIBUS TOURS | | | SCAC3 |
| 7 | OMBU | MISSIONLINE LOGISTICS SA | | RA | BIC |
| 8 | OMBU | Omnibox Container Management Services | | | RSRV |
| 9 | OMBU | OMNIBOX CONTAINER MANAGEMENT SERVIC | | | SCAC4 |
