List of rivers of the United States: M
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This is a list of rivers in the United States that have names starting with the letter M. For the main page, which includes links to listings by state, see List of rivers in the United States.
M
- Mad River - Ohio
- Madison River - Wyoming, Montana
- Mahoning River - Ohio, Pennsylvania
- Malheur River - Oregon
- Manitowish River - Wisconsin
- Manitowoc River - Wisconsin
- Manumuskin River - New Jersey
- Maple River - North Dakota
- Maquoketa River - Iowa
- Marengo River - Wisconsin
- Marias River - Montana
- Mascoma River - New Hampshire
- Mat River - Virginia
- Matanuska River - Alaska
- Matta River - Virginia
- Mattaponi River - Virginia
- Mattole River - California
- Maumee River - Indiana, Ohio
- Maunesha River - Wisconsin
- Maurice River - New Jersey
- Mayo River - Virginia
- McCloud River - California
- McKenzie River - Oregon
- Meadow River - West Virginia
- Meadow Valley Wash - Nevada
- Mecan River - Wisconsin
- Medina River - Texas
- Medicine Bow River - Colorado, Wyoming
- Meeme River - Wisconsin
- Menominee River - Michigan, Wisconsin
- Menominee River - Wisconsin, Illinois
- Menomonee River - Wisconsin
- Meramec River - Missouri
- Merced River - California
- Merrimack River - Massachusetts, New Hampshire
- Mettawee River - Vermont, New York
- Miami River - Florida
- Miami River - New York
- Miami River - Oregon
- Middle River - Minnesota
- Middle River - Wisconsin
- Middle Fork River - West Virginia
- Middle Fork Kentucky River - Kentucky
- Middle Island Creek - West Virginia
- Milk River - Montana
- Mill Creek - West Virginia
- Mill Run - West Virginia
- Milwaukee River - Wisconsin
- Mink River - Wisconsin
- Minnesota River - Minnesota
- Missisquoi River - Vermont
- Mississippi River
- Missouri River
- Mobile River - Alabama
- Mohawk River - New Hampshire
- Mohawk River - New York
- Mohican River - Ohio
- Mojave River - California
- Mokelumne River - California
- Molalla River - Oregon
- Monocacy River - Maryland
- Monongahela River - West Virginia, Pennsylvania
- Montello River - Wisconsin
- Montreal River - Michigan, Wisconsin
- Moose River - New York
- Moose River - Wisconsin
- Moreau River - North Dakota
- Mud River - Kentucky
- Mud River - West Virginia
- Mukwonago River - Wisconsin
- Mulberry Fork of the Black Warrior River - Alabama
- Mullet River - Wisconsin
- Mullica River - New Jersey
- Murderkill River - Delaware
- Musconetcong River - New Jersey
- Muskegon River - Michigan
- Muskingum River - Ohio
- Musselshell River - Montana