On the Record · Marathon Petroleum
Marathon Petroleum subsidiaries, as it lists them
The subsidiaries Marathon Petroleum lists in its latest annual report, with the jurisdiction of each, linked to the filing.
Subsidiaries it lists
| Subsidiary | Jurisdiction |
|---|---|
| 631 South Main Street Development LLC | Delaware |
| Andeavor Field Services LLC | Delaware |
| Andeavor LLC | Delaware |
| Andeavor Logistics LLC | Delaware |
| Andeavor Midstream Partners GP LLC | Delaware |
| Andeavor Midstream Partners LP | Delaware |
| Andeavor Servicios de Mexico, S. de R.L. de C.V. | Mexico |
| Asphalt Terminals LLC | Delaware |
| BANGL Operating, LLC | Delaware |
| BANGL, LLC | Delaware |
| BEH Holding LLC | Delaware |
| Blanchard Pipe Line Company LLC | Delaware |
| Blanchard Refining Company LLC (d/b/a Galveston Bay Refinery) | Delaware |
| Blanchard Terminal Company LLC | Delaware |
| Buckeye Assurance Corporation | Vermont |
| Buffalo Terminal LLC | Delaware |
| Canton Refining Logistics LLC | Delaware |
| Carson Cogeneration LLC | Delaware |
| Catlettsburg Refining Logistics LLC | Delaware |
| Catlettsburg Refining, LLC | Delaware |
| Cincinnati BioRefining Corp. | Delaware |
| Cincinnati Renewable Fuels LLC | Delaware |
| Combustibles Playa Rosarito, S.A. de C.V. | Mexico |
| Corn Oil and Renewable Energy LLC | Delaware |
| Dakota Prairie Refining, LLC (d/b/a Dickinson Renewable Diesel Facility, Marathon Dickinson Refinery) | Delaware |
| Detroit Refining Logistics LLC | Delaware |
| Galveston Bay Refining Logistics LLC | Delaware |
| Garyville Refining Logistics LLC | Delaware |
| Giant Industries, Inc. | Delaware |
| Golden State Renewable Fuels LLC | Delaware |
| Gray Oak Gateway Holdings LLC | Delaware |
| Hardin Street Holdings LLC | Delaware |
| Hardin Street Marine LLC (d/b/a MPLX Marine) | Delaware |
| Hardin Street Transportation LLC | Delaware |
| Kenai Pipe Line Company LLC | Delaware |
| Marathon Blue Water Holdings LLC | Delaware |
| Marathon Coastal Holdings LLC | Delaware |
| Marathon International Holdings LLC | Delaware |
| Marathon International Products Supply LLC | Delaware |
| Marathon Maritime Company | Delaware |
| Marathon Petroleum Canada Trading & Supply ULC (d/b/a Marathon Petroleum Canada Trading & Supply ULC (Corporation)) | British Columbia |
| Marathon Petroleum Company Canada, Ltd. | Alberta |
| Marathon Petroleum Company LP (d/b/a Inland Towing Company, Marathon Petroleum Company Limited Partnership, Marathon Petroleum LP, Marathon Petroleum Company LLC) | Delaware |
| Marathon Petroleum Holding Company | Delaware |
| Marathon Petroleum Logistics Services LLC | Delaware |
| Marathon Petroleum Peru S.R.L. | Peru |
| Marathon Petroleum Service Company LLC | Delaware |
| Marathon Petroleum Supply and Trading LLC | Delaware |
| Marathon Petroleum Supply LLC | Delaware |
| Marathon Petroleum Trading Canada LLC | Delaware |
| Marathon Pipe Line LLC (d/b/a Marathon Pipe Line (Delaware) LLC) | Delaware |
| Marathon PrePaid Card LLC | Ohio |
| Marathon Refining Logistics Services LLC | Delaware |
| Marathon Tanker Holdings LLC | Delaware |
| Marathon Trading and Supply Services Limited | United Kingdom |
| MarkWest Agua Blanca Pipeline, L.L.C. | Delaware |
| MarkWest Bluestone Ethane Pipeline, L.L.C. | Delaware |
| MarkWest Energy East Texas Gas Company, L.L.C. | Delaware |
| MarkWest Energy Operating Company, L.L.C. | Delaware |
| MarkWest Energy Partners LLC | Delaware |
| MarkWest Energy West Texas Gas Company, L.L.C. | Delaware |
| MarkWest Hydrocarbon, L.L.C. | Delaware |
| MarkWest Liberty Bluestone, L.L.C. | Delaware |
| MarkWest Liberty Ethane Pipeline, L.L.C. | Delaware |
| MarkWest Liberty Gas Gathering, L.L.C. | Delaware |
| MarkWest Liberty Midstream & Resources, L.L.C. | Delaware |
| MarkWest Liberty NGL Pipeline, L.L.C. | Delaware |
| MarkWest Mariner Pipeline, L.L.C. | Delaware |
| MarkWest Ohio Fractionation Company, L.L.C. | Delaware |
| MarkWest Oklahoma Gas Company, L.L.C. | Oklahoma |
| MarkWest Panola Utility Company, L.L.C. | Delaware |
| MarkWest Pioneer, L.L.C. | Delaware |
| MarkWest Pipeline Company, L.L.C. | Texas |
| MarkWest Ranger Pipeline Company, L.L.C. | Delaware |
| MarkWest Tornado GP, L.L.C. | Delaware |
| MarkWest Utica Operating Company, L.L.C. | Delaware |
| MPC Alaska Terminal Company LLC | Delaware |
| MPC Finance Co. | Delaware |
| MPC International Holdings LLC | Delaware |
| MPC Investment Fund, Inc. | Delaware |
| MPC Investment LLC (d/b/a MPC Investment LLC of Delaware) | Delaware |
| MPC Trade Receivables Company I LLC | Delaware |
| MPL Louisiana Holdings LLC | Delaware |
| MPLX Delaware Basin LLC | Delaware |
| MPLX Fuels Distribution LLC | Delaware |
| MPLX GP LLC | Delaware |
| MPLX Logistics Holdings LLC | Delaware |
| MPLX LP | Delaware |
| MPLX Operations LLC | Delaware |
| MPLX Ozark Pipe Line LLC | Delaware |
| MPLX Terminal and Storage LLC | Delaware |
| MPLX Terminals LLC | Delaware |
| MPLXIF LLC | Delaware |
| Mt. Airy Terminal LLC | Delaware |
| MTH Louisiana LLC | Delaware |
| MTH Ohio LLC | Delaware |
| MTH Texas LLC | Delaware |
| MTH West Virginia LLC | Delaware |
| MWE GP LLC | Delaware |
| Niles Properties LLC (d/b/a Niles Acquisitions (Niles Properties) LLC, Niles Acquisitions LLC (Niles Properties LLC)) | Delaware |
| Northwind Delaware Holdings LLC | Delaware |
| Northwind Management Holdings LLC | Delaware |
| Northwind Management LLC | Delaware |
| Northwind Midstream Operating LLC | Delaware |
| Northwind Midstream Partners LLC | Delaware |
| Northwind Midstream Sub I LLC | Delaware |
| Ocean Tankers LLC | Delaware |
| Ohio Condensate Company, L.L.C. | Delaware |
| Ohio River Pipe Line LLC | Delaware |
| Redland Vision, LLC | Delaware |
| Rio Hub LLC | Delaware |
| Robinson Refining Logistics LLC | Delaware |
| RW Land Company | Delaware |
| San Juan Refining Company, LLC | New Mexico |
| South Houston Green Power, LLC | Delaware |
| St. Paul Park Refining Co. LLC (d/b/a Marathon St. Paul Park Refinery, St. Paul Park Refining Company LLC) | Delaware |
| Tesoro Alaska Company LLC (d/b/a Marathon Kenai Refinery) | Delaware |
| Tesoro Alaska Pipeline Company LLC | Delaware |
| Tesoro Alaska Terminals LLC | Delaware |
| Tesoro Aviation Company | Delaware |
| Tesoro Companies, Inc. | Delaware |
| Tesoro Environmental Resources Company | Delaware |
| Tesoro Great Plains Gathering & Marketing LLC (d/b/a Patterson Rail Terminal) | Delaware |
| Tesoro High Plains Pipeline Company LLC | Delaware |
| Tesoro Logistics Finance Corp. | Delaware |
| Tesoro Logistics Northwest Pipeline LLC | Delaware |
| Tesoro Logistics Operations LLC | Delaware |
| Tesoro Logistics Pipelines LLC | Delaware |
| Tesoro Mexico Supply & Marketing, S. de R.L. de C.V. | Mexico |
| Tesoro Petroleum (Singapore) Pte. Ltd. | Singapore |
| Tesoro Refining & Marketing Company LLC 1 | Delaware |
| Tesoro SoCal Cogen Company LLC (d/b/a Watson Cogeneration Company) | Delaware |
| Tesoro SoCal Pipeline Company LLC | Delaware |
| Treasure Franchise Company LLC | Delaware |
| Triple Streams Gathering LLC | Delaware |
| Virent, Inc. | Delaware |
| Watson Cogeneration Company LLC (d/b/a Watson Cogeneration Company) | Delaware |
| West Relay Gathering Company, L.L.C. | Delaware |
| Western Refining Company LLC (d/b/a Marathon El Paso Refinery) | Delaware |
| Western Refining Conan Gathering, LLC | Delaware |
| Western Refining de Mexico, S. de R.L. de C.V. | Mexico |
| Western Refining Delaware Basin Storage, LLC | Delaware |
| Western Refining Pipeline, LLC | New Mexico |
| Western Refining Southwest LLC (d/b/a Western Refining Southwest (Delaware) LLC) | Delaware |
| Western Refining Terminals, LLC | Delaware |
| WNRL Energy GP, LLC | Delaware |
| WNRL Energy, LLC | Delaware |
| Woodhaven Cavern LLC | Delaware |
From Exhibit 21 of the 10-K for 2025. Companies must list their significant subsidiaries there and may leave out smaller ones, so this is the company’s own list, not every entity it owns.
Read from Marathon Petroleum’s annual reports (10-K for 2025, 10-K for 2024, 10-K for 2023, 10-K for 2022) and the financial data it files with the SEC, as of 2026-02-26. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.