| 1 | OMT | Castillo Mourra | | HN | AVCODES |
| 2 | OMTA | OMEGA TRANSPORT CORP | | | SCAC3 |
| 3 | OMTA | OM TRANSPORT INC | | | SCAC4 |
| 4 | OMTB | OMNI TRANSPORTATION INC | | | SCAC3 |
| 5 | OMTB | OM TRUCKING | | | SCAC4 |
| 6 | OMTC | OMNITRON CORPORATION | | | SCAC3 |
| 7 | OMTD | OMNITRADE SHIPPING COMPANY | | | SCAC3 |
| 8 | OMTE | ONE MORE TIME RACING STABLES | | | SCAC4 |
| 9 | OMTG | OMEGA TRUCKING INC | | | SCAC3 |
| 10 | OMTH | OZARK MTN TRUCKING INC | | | SCAC4 |
| 11 | OMTI | OSIA MARINE TRADING INC. | | | SCAC3 |
| 12 | OMTI | OMNI TRANSPORTATION INC | | | SCAC4 |
| 13 | OMTK | OLGA TRUCKLINE INC | | | SCAC3 |
| 14 | OMTK | OM TRUCKING | | | SCAC4 |
| 15 | OMTL | OMNI TRUCK LINE | | | SCAC3 |
| 16 | OMTN | OMNI TRANSPORTATION SERVICES INC | | | SCAC3 |
| 17 | OMTN | OMNI TRANSPORTATION SERVICES INC | | | SCAC4 |
| 18 | OMTP | OMNI TRANSPORTATION COMPANY INC | | | SCAC3 |
| 19 | OMTQ | OHIO MOTOR TRANSPORTATION CO | | | SCAC3 |
| 20 | OMTR | OLDE MERIT TRANSPORTATION INC | | | SCAC3 |
| 21 | OMTR | OMEGA TRANSPORTACIONES | | | SCAC4 |
| 22 | OMTV | OTTAWA METRO TOWING AND RECOVERY IN | | | SCAC4 |
| 23 | OMTX | Oscar Mayer & Co. | 1/1941-1/1950 | | NAKINA |
