| 1 | OMS | Omskavia Airline, Public Joint-Stock Society | IATA: N3, Callsign: Omsk, IATA Prefix: 753, | RUS | AVCODES |
| 2 | OMS | SalamAir | IATA: OV, Callsign: Mazoon, | OM | AVCODES |
| 3 | OMS | Omskavia Airline | IATA: N3 | | ICAO1 |
| 4 | OMSC | OLSON, FRED, MOTOR SERVICE COMPANY | | | SCAC3 |
| 5 | OMSE | OMO-SET | | | SCAC4 |
| 6 | OMSG | OMNI SHPPING INC | | | SCAC3 |
| 7 | OMSG | OMNI MARITIME INC | | | SCAC4 |
| 8 | OMSH | OMEGA SHIPPING (CA) INC | | | SCAC3 |
| 9 | OMSH | OKOTECH MACHINE SHOP INC | | | SCAC4 |
| 10 | OMSI | OMAHA MAIL SERVICE | | | SCAC3 |
| 11 | OMSI | OMNI MOVING AND STORAGE INC | | | SCAC4 |
| 12 | OMSL | OLYMPIC MOVING & STORAGE II LLC | | | SCAC4 |
| 13 | OMSN | OTAY MESA SALES INC | | | SCAC4 |
| 14 | OMSP | OMEGA SHIPPING CO INC | | | SCAC4 |
| 15 | OMSQ | OVERSEAS MOVING SPECIALISTS INC | | | SCAC4 |
| 16 | OMSU | ORICA MINING SERVICES PORTUGAL | | P | BIC |
| 17 | OMSV | OMNI MOVING & STORAGE OF VIRGINIA I | | | SCAC3 |
| 18 | OMSX | J.T. Leasing Inc. d/b/a Ohio Mulch | 7/2005 (not listed) | | NAKINA |
| 19 | OMSX | J. T. LEASING CO. d/b/a OHIO MULCH | | | PWRC |
| 20 | OMSX | Ohio Mulch (J. T. Leasing) | | | RSRV |
| 21 | OMSX | OHIO MULCH | | | SCAC4 |
| 22 | OMSY | OMARA MOVING SYSTEMS INC | | | SCAC4 |
