• Ma, Fiona
• Mack, Connie, IV
• Mack, Connie, Jr.
• Mack, Tony F., Sr.
• Madaleno, Richard S., Jr.
• Madden, Jerry
• Madden, Martin G
• Maddox, Scott
• Madigan, Lisa
• Madigan, Michael
• Maehara, Seiji
• Maffei, Daniel B.
• Mahoney, Tim
• Maldonado, Abel
• Maldonado, Roberto
• Malia, Elizabeth A
• Maliki, Nouri
• Malloy, Dannel P.
• Malone, David
• Malone, James E. Jr
• Maloney, Carolyn B.
• Maloney, David M. Sr.
• Maloney, Edward
• Manchin, Joe, III
• Mandel, Marvin
• Mandela, Nelson
• Mann, Jennifer L
• Manno, Roger
• Mansoor, Allan R.
• Manuel, Dale
• Manzullo, Donald A
• Marcellino, Carl L
• Margolis, Gwen
• Mariani, Carlos
• Marino, Tom
• Markell, Jack
• Markey, Edward J
• Markley, Joe
• Markosek, Joseph F
• Markowitz, Marty
• Marks, David
• Marriott, Salima S
• Marsh, Del
• Marsh, Henry L., III
• Marsico, Ronald S
• Martin, Jim
• Martin, John L
• Martinez, Mel
• Martinez, Susana
• Martinson, Rita
• Marty, John
• Massa, Eric
• Masters, Thomas
• Mathern, Tim
• Matheson, Jim
• Mathias, James N., Jr.
• Mathias, Sidney H
• Matsui, Doris O.
• Matthews, Gary
• Mautino, Frank J
• Maxwell, W Henry
• May, Karen
• May, Steve
• Mayer, Robert
• Maynard, Andrew M.
• Mazany, Terry
• Maziarz, George D
• Mbeki, Thabo
• McAuliffe, Michael P
• McCabe, Brooks
• McCabe, Christopher J
• McCain, John
• McCall, Tom
• McCarter, Kyle
• McCarthy, Carolyn
• McCarthy, Garry
• McCaskill, Claire
• McCaul, Michael T.
• McCaulley, Matt
• McChrystal, Stanley A.
• McClintock, Tom
• McClurkin, Mary Sue
• McCluskey, David
• McCollum, Betty
• McCollum, Bill
• McConnell, Mitch
• McCord, Joe
• McCotter, Thaddeus
• McCoy, Matt
• McCreary, Bill
• McCrery, Jim
• McDermott, Jim
• McDonnell, Bob
• McEachin, A Donald
• McFadden, Nathaniel J
• McGaha, Vernie
• McGovern, James P
• McGrath, Thomas
• McGuire, Lesil
• McHugh, John M
• McInnis, Scott
• McIntosh, Maggie L
• McIntyre, Mike
• McKeon, Buck
• McKinley, David
• McKinley, William
• McKinney, John
• McLachlan, Michael A.
• McLaughlin, Jeff
• McMorris, Cathy
• McNally, Randy
• McNerney, Jerry
• McWaters, Jeffrey L.
• Mead, Matt
• Medvedev, Dmitry
• Meehan, Martin T
• Meehan, Pat
• Meek, Kendrick B.
• Meles Zenawi
• Mell, Deborah
• Mell, Richard F.
• Mellow, Robert J
• Mendoza, Susana A
• Menendez, Bob
• Menor, Ron
• Mensch, Bob
• Merkel, Angela
• Merkley, Jeff
• Metzgar, Carl Walker
• Meyer, Dan
• Meyer, Edward
• Meyer, Kevin
• Mfume, Kweisi
• Mica, John L.
• Michele, Roger Brian
• Middleton, Sharon Green
• Middleton, Thomas M
• Mielke, Tom
• Migden, Carole
• Mikati, Najib
• Mikulski, Barbara A.
• Milanovic, Zoran
• Millender-McDonald, Juanita
• Miller, Brad
• Miller, Candice
• Miller, Charles
• Miller, Dale
• Miller, Dan
• Miller, David
• Miller, Doug
• Miller, Ed
• Miller, Gary G
• Miller, George
• Miller, Jeff
• Miller, Joe
• Miller, John C.
• Miller, Ken
• Miller, Mark
• Miller, Paul
• Miller, Thomas V. Mike
• Miller, Yvonne B.
• Miller, Zell
• Millner, John J.
• Mills, John Evans Atta
• Minnick, Walt
• Mitchell IV, Clarence M.
• Mitchell, Holly J.
• Mitchell, Jerry
• Mitchell, Wendell
• Mitchem, Hinton
• Mitman, Phil
• Mitts, Emma
• Moak, Bobby
• Moe, Roger D
• Moffett, Toby
• Molina, Gloria
• Mollohan, Alan B.
• Mondale, Walter
• Mongiardo, Daniel
• Monroe, James
• Monroe, Jeff
• Monserrate, Hiram
• Monteith, Dick
• Montford, Bill
• Montgomery, Karen S.
• Montgomery, Velmanette
• Monti, Mario
• Moody, Lisa
• Moody-Lawrence, Bessie
• Mooney, Alex X
• Moore, David H.
• Moore, Dennis
• Moore, Joseph A.
• Morales, Evo
• Moran, James P
• Moran, Jerry
• Morella, Constance A
• Moreno, Proco Joe
• Morgan, Harvey B.
• Morhaim, Dan K
• Morrell, Mike
• Morris, Greg
• Morris, Jeff
• Morrison, James
• Morsi, Mohamed
• Morton, Lorraine
• Moul, Dan
• Moulton, Terry
• Mourdock, Richard
• Mousavi, Mir-Hossain
• Moyle, Mike
• Mubarak, Hosni
• Mueller, Robert
• Mugabe, Robert
• Mukasey, Michael
• Mukherjee, Pranab
• Mullen, Michael G.
• Mullery, Joe
• Mulvaney, Mick
• Mundy, Phyllis
• Munoz, Ricardo
• Munson, Donald F
• Murkowski, Frank
• Murkowski, Lisa
• Murphy, Chris
• Murphy, Chris
• Murphy, Donald E
• Murphy, Jim
• Murphy, Joan Patricia
• Murphy, Mary
• Murphy, Matt
• Murphy, Pat
• Murphy, Thomas
• Murray, Ed
• Murray, Kevin
• Murray, Patty
• Murray, Therese
• Murtha, John P
• Muse, C. Anthony
• Musgrave, Marilyn
• Mussman, Michelle
• Mutharika, Bingu wa
• Myardit, Salva Kiir
• Myers, David
• Myers, John