| 1 | MPR | Empire Aviation Services Limited | IATA Prefix: 869, | WAN | AVCODES |
| 2 | MPR | Empire Aviation Services | | | ICAO1 |
| 3 | MPRA | MOPARTS INC | | | SCAC4 |
| 4 | MPRC | MARYLAND & PENNSYLVANIA RAILROAD | | | PWRC |
| 5 | MPRD | MADRID PRODUCE | | | SCAC4 |
| 6 | MPRE | MEMPHI | | | SCAC4 |
| 7 | MPRF | MAPLE RIDGE FARM | | | SCAC4 |
| 8 | MPRH | MPR TRANSPORT | | | SCAC4 |
| 9 | MPRI | METROPOLITAN PAPER RECYCLING INC | | | SCAC4 |
| 10 | MPRL | MAPLE PRO | | | SCAC4 |
| 11 | MPRN | MARQUARD | | | SCAC4 |
| 12 | MPRO | MET-PRO SHIPPING CORP | | | SCAC4 |
| 13 | MPRQ | MPR SUPPLY CHAIN SOLUTIONS | | | SCAC4 |
| 14 | MPRU | MEDITERRANEA | | | SCAC4 |
| 15 | MPRW | MCASPHA | | | SCAC4 |
| 16 | MPRX | Motive Power Equipment and Solutins, Inc. | 7/2005 (not listed) | | NAKINA |
| 17 | MPRX | Montana Power Co. | 1/1952-10/1957; eliminated 10/1960 | | NAKINA |
| 18 | MPRX | Miller Petroleum Co. | 7/1923 | | NAKINA |
| 19 | MPRX | The Miller Petroleum Refining Co. | 8/1920 | | NAKINA |
| 20 | MPRX | Montana Power Co. | 1/52-10/57; eliminated 10/60 | | NRHS |
| 21 | MPRX | *MILLER PETROLEUM CO. | | | PWRC |
| 22 | MPRX | *MONTANA POWER CO. | | | PWRC |
| 23 | MPRX | +MOTIVE POWER EQUIPMENT & SOLUTIONS, INC. | | | PWRC |
| 24 | MPRX | Motive Power & Equipment Solutions | | | RSRV |
| 25 | MPRX | MOTIVE POWER EQUIPMENT AND SOLUTION | | | SCAC4 |
