- LaBonge, Tom
- Labrador, Raul
- Lack, James J
- Lagarde, Christine
- LaHood, Darin
- LaHood, Ray
- LaMalfa, Doug
- Lamberti, Al
- Lamborn, Doug
- Lamont, Ned
- Lampson, Nick
- Landers, Joseph T., III
- Landrieu, Mary L
- Landrieu, Mitch
- Landry, Jeff
- Landwehr, Brenda
- Lane, Lona
- Lang, Louis I
- Lankford, James
- Lantos, Tom
- Lara, Ricardo
- Largent, Steve
- LaRouche, Lyndon
- Larsen, Rick
- Larson, Chris
- Larson, John
- Larson, John B.
- Lasee, Frank
- Latham, Tom
- LaTourette, Steven C
- Latvala, Jack
- Laurino, Margaret
- Lautenberg, Frank
- Lauzen, Chris
- Lawlah, Gloria G
- Lawlor, Michael
- Lawson, Connie
- Lawson, Linda
- Lazich, Mary
- Leahy, Patrick
- Leavitt, Michael O.
- Lee Myung-bak
- Lee, Barbara
- Lee, Christopher J.
- Lee, Don
- Lee, Edwin M.
- Lee, Jimmie
- Lee, Mike
- Lee, Stan
- Lee, Tom
- Lehman, John
- Leibham, Joseph K
- Leland, Burton
- LeMieux, George
- Leno, Mark
- Lensing, Vicki
- Leopold, John R
- LePage, Paul
- Lesniak, Raymond J
- Levin, Carl
- Levin, Sander M
- Levy, Steve
- Lewis, James
- Lewis, John
- Lewis, Ron
- Libby, Lewis
- Lieberman, Joe
- Lieu, Ted
- Lightford, Kimberly
- Lincoln, Blanche
- Linder, John
- Lindley, Al
- Lingle, Linda
- Link, Terry
- Linkhart, Doug
- Lipinski, Daniel
- Lipinski, William O
- Little, Zeb
- Litvack, David
- Liu Xiaobo
- Liu, Carol
- Livni, Tzipi
- Locke, Mamie E.
- Lockhart, Becky
- Lockyer, Bill
- Lofgren, Zoe
- Logue, Dan
- Long, Billy
- Looney, Martin M
- Lott, Trent
- Loudon, John
- Love, Mary Ann
- Lowe, Kathy
- Lowenthal, Alan
- Lowey, Nita M
- Lubchenco, Jane
- Lucas, Frank D
- Lucas, Ken
- Lucas, L Louise
- Lucio, Eddie Jr
- Luebke, Paul
- Luechtefeld, David
- Luetkemeyer, Blaine
- Lugar, Richard
- Lukashenko, Alexander
- Lula da Silva, Luiz Inacio
- Lummis, Cynthia M.
- Lundby, Mary
- Lyle, Freddrenna
- Lynch, Stephen F
- Lynn, Evelyn J
- Lynum, Daisy