Document

Exhibit 21.1

MARATHON PETROLEUM CORPORATION

LIST OF SUBSIDIARIES

as of December 31, 2023


			Name of Subsidiary			Jurisdiction of Organization/Incorporation
			631 South Main Street Development LLC			Delaware
			Alden Group Renewable Enterprise LLC			Delaware
			Andeavor Field Services LLC			Delaware
			Andeavor Gathering I LLC			Delaware
			Andeavor LLC			Delaware
			Andeavor Logistics CD LLC			Delaware
			Andeavor Logistics LLC			Delaware
			Andeavor Midstream Partners GP LLC			Delaware
			Andeavor Midstream Partners LP			Delaware
			Andeavor Midstream Partners Operating LLC			Delaware
			Andeavor Servicios de Mexico, S. de R.L. de C.V.			Mexico
			Asphalt Terminals 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
			Central de Hidrocarburos Limpios, S. de R.L. de C.V.			Mexico
			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
			Green River Processing, LLC			Delaware
			Hardin Street Holdings LLC			Delaware


			Hardin Street Marine LLC			Delaware
			Hardin Street Transportation LLC			Delaware
			Kenai LNG LLC			Delaware
			Kenai Pipe Line Company LLC			Delaware
			Marathon International Holdings LLC			Delaware
			Marathon International Products Supply LLC			Delaware
			Marathon Maritime Company			Delaware
			Marathon Petroleum Canada Trading & Supply ULC			British Columbia
			Marathon Petroleum Company Canada, Ltd.			Alberta
			Marathon Petroleum Company LP (d/b/a Marathon Petroleum LP, Marathon Petroleum Company LLC)			Delaware
			Marathon Petroleum Holding Company			Delaware
			Marathon Petroleum Logistics Services LLC			Delaware
			Marathon Petroleum Mexico, S. de R.L. de C.V.			Mexico
			Marathon Petroleum Peru S.R.L.			Peru
			Marathon Petroleum Service Company LLC			Delaware
			Marathon Petroleum Servicios de Mexico, S. de R.L. de C.V.			Mexico
			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
			Marathon Transporte de Hidrocarburos, S. de R.L. de C.V.			Mexico
			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 Finance Corporation			Delaware
			MarkWest Energy Operating Company, L.L.C.			Delaware
			MarkWest Energy Partners, L.P.			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 Texas PNG Utility, L.L.C.			Texas
			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
			Ocean Tankers LLC			Delaware
			Ohio River Pipe Line LLC			Delaware
			Redland Vision, LLC			Delaware
			Rendezvous Pipeline Company, LLC			Colorado
			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)			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 Corporation			Arizona
			Tesoro Environmental Resources Company			Delaware
			Tesoro Great Plains Gathering & Marketing LLC (d/b/a Patterson Rail Terminal)			Delaware
			Tesoro Great Plains Holdings Company LLC			Delaware
			Tesoro Great Plains Midstream LLC			Delaware
			Tesoro High Plains Pipeline Company LLC			Delaware
			Tesoro Logistics Finance Corp.			Delaware
			Tesoro Logistics GP, LLC			Delaware
			Tesoro Logistics Northwest Pipeline LLC			Delaware
			Tesoro Logistics Operations LLC			Delaware
			Tesoro Logistics Pipelines LLC			Delaware
			Tesoro Maritime Company			Delaware
			Tesoro Mexico Supply & Marketing, S. de R.L. de C.V.			Mexico
			Tesoro Petroleum (Singapore) Pte. Ltd.			Singapore
			Tesoro Refining & Marketing Company LLC1			Delaware
			Tesoro SoCal Cogen Company LLC (d/b/a Watson Cogeneration Company)			Delaware
			Tesoro SoCal Pipeline Company LLC			Delaware
			Tesoro Trading Company LLC			Delaware
			Trans-Foreland Pipeline Company LLC			Delaware
			Treasure Franchise Company LLC			Delaware
			TTC Holdings 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 Logistics GP, LLC			Delaware
			Western Refining Logistics, LP			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
			Western Refining Wholesale, LLC			Delaware
			Western Refining Yorktown, Inc.			Delaware
			Western Refining, Inc.			Delaware
			WNR Mexico 1, LLC			Delaware
			WNR Mexico 2, LLC			Delaware
			WNRL Energy GP, LLC			Delaware


			WNRL Energy, LLC			Delaware
			Woodhaven Cavern LLC			Delaware


			1.Indicates d/b/a Marathon Los Angeles Refinery, Marathon Mandan Refinery, Marathon Salt Lake City Refinery, Tesoro Anacortes Refinery, Tesoro Anacortes Refining Company, Tesoro Los Angeles Refinery – Calciner Operations, Tesoro Los Angeles Refinery – Carson Operations, Tesoro Los Angeles Refinery – Wilmington Operations, Tesoro Refining & Marketing Company LLC, TRMC #66008, TRMC #66121, TRMC #66139, TRMC #66140, TRMC #66141, TRMC #66142, TRMC #66144, TRMC #66147, TRMC #66153, TRMC #66156, TRMC #66160, TRMC #66161, TRMC #66163, TRMC #66164, TRMC #66166, TRMC #66167, TRMC #66171, TRMC #66179, TRMC #66180, TRMC #66183, TRMC #66190, TRMC #66194, TRMC #66195 and TRMC #66198.