Members of the United States Congress since 1989 with last names starting with LMNO.
| Labrador, Raul | House |
| LaFalce, John | House House |
| Lagomarsino, Robert | House |
| LaHood, Darin | House |
| LaHood, Ray | House |
| LaMalfa, Doug | House |
| Lamb, Conor | House |
| Lambert, Blanche | House |
| Lamborn, Doug | House |
| Lampson, Nick | House House |
| Lancaster, H. | House |
| Lance, Leonard | House |
| Landrieu, Mary | Senate |
| Landry, Jeff | House |
| Langevin, James | House |
| Lankford, James | House Senate |
| Lantos, Tom | House House |
| Largent, Steve | House |
| LaRocco, Larry | House |
| Larsen, Rick | House |
| Larson, John | House |
| Latham, Tom | House House House |
| LaTourette, Steven | House House |
| Latta, Robert | House |
| Laughlin, Greg | House |
| Lautenberg, Frank | Senate Senate |
| Lawrence, Brenda | House |
| Lawson, Al | House |
| Lazio, Rick | House |
| Leach, Jim | House House |
| Leahy, Patrick | Senate |
| Leath, Marvin | House |
| Lee, Barbara | House House |
| Lee, Chris | House |
| Lee, Mike | Senate |
| Lehman, Richard | House House |
| Lehman, William | House |
| Leland, Mickey | House |
| LeMieux, George | Senate |
| Lent, Norman | House |
| Lesko, Debbie | House |
| Levin, Carl | Senate |
| Levin, Sandy | House House House |
| Levine, Mel | House |
| Levy, David | House |
| Lewis, Jason | House |
| Lewis, Jerry | House House House |
| Lewis, John | House |
| Lewis, Ron | House |
| Lewis, Tom | House House |
| Lieberman, Joseph | Senate |
| Lieu, Ted | House |
| Lightfoot, Jim | House House |
| Lincoln, Blanche | House Senate |
| Linder, John | House House House |
| Lipinski, Dan | House |
| Lipinski, William | House House |
| Livingston, Robert | House |
| Lloyd, Marilyn | House |
| LoBiondo, Frank | House |
| Loebsack, David | House |
| Lofgren, Zoe | House House |
| Long, Billy | House |
| Long, Jill | House |
| Longley, James | House |
| Lott, Trent | Senate |
| Loudermilk, Barry | House |
| Love, Mia | House |
| Lowenthal, Alan | House |
| Lowery, Bill | House |
| Lowey, Nita | House House House |
| Lucas, Frank | House House |
| Lucas, Ken | House |
| Luetkemeyer, Blaine | House House |
| Lugar, Richard | Senate |
| Luján, Ben | House |
| Lujan Grisham, Michelle | House |
| Luken, Charles | House |
| Luken, Thomas | House |
| Lukens, Donald | House |
| Lummis, Cynthia | House |
| Lungren, Dan | House |
| Luther, William | House |
| Lynch, Stephen | House House |
| MacArthur, Tom | House |
| Machtley, Ronald | House |
| Mack, Connie | Senate |
| Mack, Connie | House |
| Madigan, Edward | House |
| Maffei, Dan | House House |
| Mahoney, Tim | House |
| Majette, Denise | House |
| Maloney, Carolyn | House House |
| Maloney, James | House |
| Maloney, Sean | House |
| Manchin, Joe | Senate |
| Mann, David | House |
| Manton, Thomas | House House |
| Manzullo, Donald | House |
| Marchant, Kenny | House |
| Margolies-Mezvinsky, Marjorie | House |
| Marino, Tom | House |
| Markey, Betsy | House |
| Markey, Edward | House House Senate |
| Marlenee, Ron | House |
| Marshall, Jim | House |
| Marshall, Roger | House |
| Martin, David | House |
| Martin, Lynn | House |
| Martinez, Marty | House House |
| Martinez, Mel | Senate |
| Martini, Bill | House |
| Mascara, Frank | House |
| Massa, Eric | House |
| Massie, Thomas | House |
| Mast, Brian | House |
| Matheson, Jim | House House |
| Mathews, Harlan | Senate |
| Matsui, Doris | House House |
| Matsui, Robert | House House |
| Matsunaga, Spark | Senate |
| Mavroules, Nicholas | House |
| Mazzoli, Romano | House |
| McAllister, Vance | House |
| McCain, John | Senate |
| McCandless, Alfred | House House |
| McCarthy, Carolyn | House |
| McCarthy, Karen | House |
| McCarthy, Kevin | House House |
| McCaskill, Claire | Senate |
| McCaul, Michael | House |
| McClintock, Tom | House |
| McCloskey, Francis | House |
| McClure, James | Senate |
| McCollum, Betty | House |
| McCollum, Bill | House House |
| McConnell, Mitch | Senate |
| McCotter, Thaddeus | House |
| McCrery, Jim | House House House |
| McCurdy, Dave | House |
| McDade, Joseph | House |
| McDermott, Jim | House |
| McEachin, Donald | House |
| McEwen, Bob | House |
| McGovern, James | House House |
| McGrath, Raymond | House |
| McHale, Paul | House |
| McHenry, Patrick | House |
| McHugh, John | House House |
| McHugh, Matthew | House |
| McInnis, Scott | House |
| McIntosh, David | House |
| McIntyre, Mike | House |
| McKeon, Howard | House |
| McKinley, David | House |
| McKinney, Cynthia | House House House |
| McMahon, Mike | House |
| McMillan, Alex | House |
| McMillen, Thomas | House |
| McMorris Rodgers, Cathy | House |
| McNerney, Jerry | House House |
| McNulty, Michael | House House |
| McSally, Martha | House |
| Meadows, Mark | House |
| Meehan, Martin | House |
| Meehan, Pat | House |
| Meek, Carrie | House |
| Meek, Kendrick | House |
| Meeks, Gregory | House House |
| Melancon, Charlie | House |
| Menendez, Bob | House Senate |
| Meng, Grace | House |
| Merkley, Jeff | Senate |
| Messer, Luke | House |
| Metcalf, Jack | House |
| Metzenbaum, Howard | Senate |
| Meyers, Jan | House |
| Mfume, Kweisi | House |
| Mica, John | House |
| Michaud, Mike | House |
| Michel, Robert | House |
| Mikulski, Barbara | Senate |
| Millender-McDonald, Juanita | House |
| Miller, Brad | House |
| Miller, Candice | House |
| Miller, Clarence | House |
| Miller, Dan | House |
| Miller, Gary | House House House |
| Miller, George | House House |
| Miller, Jeff | House |
| Miller, John | House |
| Miller, Zell | Senate |
| Mineta, Norman | House House |
| Minge, David | House |
| Mink, Patsy | House |
| Minnick, Walt | House |
| Mitchell, George | Senate |
| Mitchell, Harry | House |
| Mitchell, Paul | House |
| Moakley, John | House |
| Molinari, Guy | House |
| Molinari, Susan | House House |
| Mollohan, Alan | House |
| Montgomery, G. | House |
| Moody, Jim | House |
| Moolenaar, John | House |
| Mooney, Alex | House |
| Moore, Dennis | House |
| Moore, Gwen | House |
| Moorhead, Carlos | House House |
| Moran, James | House |
| Moran, Jerry | House Senate |
| Morella, Constance | House |
| Morelle, Joe | House |
| Morrison, Bruce | House |
| Morrison, Sid | House |
| Moseley-Braun, Carol | Senate |
| Moulton, Seth | House |
| Moynihan, Daniel | Senate |
| Mrazek, Robert | House |
| Mullin, Markwayne | House |
| Mulvaney, Mick | House |
| Murkowski, Frank | Senate |
| Murkowski, Lisa | Senate |
| Murphy, Austin | House House |
| Murphy, Chris | House Senate |
| Murphy, Patrick | House |
| Murphy, Patrick | House |
| Murphy, Scott | House |
| Murphy, Stephanie | House |
| Murphy, Tim | House |
| Murray, Patty | Senate |
| Murtha, John | House |
| Musgrave, Marilyn | House |
| Myers, John | House |
| Myrick, Sue | House |
| Nadler, Jerrold | House House |
| Nagle, David | House |
| Napolitano, Grace | House House House |
| Natcher, William | House |
| Neal, Richard | House House |
| Neal, Stephen | House |
| Negrete McLeod, Gloria | House |
| Nelson, Ben | Senate |
| Nelson, Bill | House Senate |
| Nethercutt, George | House |
| Neugebauer, Randy | House |
| Neumann, Mark | House |
| Newhouse, Dan | House |
| Ney, Robert | House |
| Nichols, Dick | House |
| Nickles, Don | Senate |
| Nielson, Howard | House |
| Noem, Kristi | House |
| Nolan, Rick | House |
| Norcross, Donald | House |
| Norman, Ralph | House |
| Northup, Anne | House |
| Norton, Eleanor | House |
| Norwood, Charlie | House House |
| Nowak, Henry | House |
| Nugent, Rich | House House |
| Nunes, Devin | House House |
| Nunn, Sam | Senate |
| Nunnelee, Alan | House |
| Nussle, Jim | House House |
| Nye, Glenn | House |
| Oakar, Mary | House |
| Obama, Barack | Senate |
| Oberstar, James | House |
| Obey, David | House |
| O'Halleran, Tom | House |
| Olin, James | House |
| Olson, Pete | House |
| Olver, John | House |
| O'Rourke, Beto | House |
| Ortiz, Solomon | House |
| Orton, Bill | House |
| Osborne, Thomas | House |
| Ose, Doug | House |
| Otter, Butch | House |
| Owens, Bill | House House |
| Owens, Major | House House |
| Owens, Wayne | House |