| MPLX Terminals MT Prospect | Terminal | IL | MPLX Terminals LLC | |
| MPLX Terminals MT Vernon | Terminal | IN | MPLX Terminals LLC | |
| MPLX Terminals Macon | Terminal | GA | MPLX Terminals LLC | |
| MPLX Terminals Marietta | Terminal | OH | MPLX Terminals LLC | |
| MPLX Terminals Montgomery | Terminal | AL | MPLX Terminals LLC | |
| MPLX Terminals Muncie | Terminal | IN | MPLX Terminals LLC | |
| MPLX Terminals Nashville | Terminal | TN | MPLX Terminals LLC | |
| MPLX Terminals Niles South | Terminal | MI | MPLX Terminals LLC | |
| MPLX Terminals North Muskegon | Terminal | MI | MPLX Terminals LLC | |
| MPLX Terminals Oregon | Terminal | OH | MPLX Terminals LLC | |
| MPLX Terminals Powder Springs | Terminal | GA | MPLX Terminals LLC | |
| MPLX Terminals Robinson | Terminal | IL | MPLX Terminals LLC | |
| MPLX Terminals Rockford | Terminal | IL | MPLX Terminals LLC | |
| MPLX Terminals Romulus | Terminal | MI | MPLX Terminals LLC | |
| MPLX Terminals Selma | Terminal | NC | MPLX Terminals LLC | |
| MPLX Terminals Selma NC Moc 1 | Terminal | NC | MPLX Terminals LLC | |
| MPLX Terminals Speedway | Terminal | IN | MPLX Terminals LLC | |
| MPLX Terminals Tampa | Terminal | FL | MPLX Terminals LLC | |
| MPLX Terminals Viney Branch | Terminal | KY | MPLX Terminals LLC | |
| MT Vernon Compressor Station | Compressor station | Lincoln County, OK | Petrolink Energy LLC | |
| MVP Terminalling Pasadena | Terminal | TX | MVP Terminalling LLC | |
| Maddox Gas Com C 1e CDP | Compressor station | NM | Hilcorp Energy Company | |
| Madeline Booster Station | Compressor station | Osage County, OK | Northeast Shelf Energy LLC | |
| Madill Gas Plant | Gas processing plant | Marshall County, OK | Carrera Operating Company LLC, Madill Gas Processing | In service |
| Magellan PL Aledo West Fort Worth terminal | Terminal | TX | Magellan Pipeline Company, LLC | |
| Magellan PL Dubuque terminal | Terminal | IA | Magellan Pipeline Company, LLC | |
| Magellan PL East Houston terminal | Terminal | TX | Magellan Pipeline Company, LLC | |
| Magellan PL Fort Smith terminal | Terminal | AR | Magellan Pipeline Company, LLC | |
| Magellan PL Scott City terminal | Terminal | KS | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Albany terminal | Terminal | GA | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Alexandria terminal | Terminal | MN | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Allen terminal | Terminal | OK | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Aurora terminal | Terminal | CO | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Bettendorf 347 terminal | Terminal | IA | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Carthage terminal | Terminal | MO | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Charlotte 1 terminal | Terminal | NC | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Charlotte 2 terminal | Terminal | NC | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Chattanooga 1 terminal | Terminal | TN | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Chattanooga 2 terminal | Terminal | TN | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Cheyenne terminal | Terminal | WY | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Columbia terminal | Terminal | MO | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Dallas terminal | Terminal | TX | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Des Moines terminal | Terminal | IA | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Doniphan terminal | Terminal | NE | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Doraville 2 terminal | Terminal | GA | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Drumright terminal | Terminal | OK | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Dupont terminal | Terminal | CO | Magellan Pipeline Company, LLC | |
| Magellan Pipeline El Paso terminal | Terminal | TX | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Enid terminal | Terminal | OK | Magellan Pipeline Company, LLC | |
| Magellan Pipeline Fargo terminal | Terminal | ND | Magellan Pipeline Company, LLC | |