Lobbying firms
Every registrant in the lobbying register: firms that lobby for clients, organizations that register to lobby for themselves, and self-employed lobbyists.
12,255
registrants, A to Z
| Firm | Location | Years active |
|---|---|---|
| MARRINAN & MAZZOLA MARDON, P.C. (FORMERLY KNOWN AS GLEASON & MATHEWS, P.C.) | New York, NY | Active 2007–2008 |
| MARRIOTT INTERNATIONAL, INC. | Bethesda, MD | Active 2007–2026 |
| MARRON & ASSOCIATES | Long Beach, CA | Active 2007–2009 |
| MARRS & CO. | ANCHORAGE, AK | Active 2007–2009 |
| MARS, INCORPORATED | McLean, VA | Active 2009–2026 |
| MARSH & MCLENNAN COMPANIES, INC. | Washington, DC | Active 2008–2026 |
| MARSHALL & POPP, LLC | Washington, DC | Active 2019–2026 |
| MARSHALL BRACHMAN | Washington, DC | Active 2007–2026 |
| MARSHALL CONSULTING, LLC | Washington, DC | Active 2014–2016 |
| MARSHALL MCLEAN LLC | Vienna, VA | Active 2014–2021 |
| MARSHFIELD CLINIC HEALTH SYSTEM | MARSHFIELD, WI | Active 2007–2026 |
| MARTA AGUIRRE BASCOM | MCLEAN, VA | Active 2007–2016 |
| MARTHA BRADDOCK | SPRINGFIELD, VA | Active 2007–2016 |
| MARTIN & SEIBERT, L.C. | Martinsburg, WV | Active 2012–2013 |
| MARTIN E. SIMMONS | Nashville, TN | Active 2007–2009 |
| MARTIN FROST CONSULTING | Alexandria, VA | Active 2016–2018 |
| MARTIN GREEN | Washington, DC | Active 2009–2010 |
| MARTIN HAMBERGER | STERLING, VA | Active 2007–2008 |
| MARTIN MORRIS | Washington, DC | Active 2008–2018 |
| MARTIN SPITZER | Arlington, VA | Active 2007–2009 |
| MARTIN-WILBOURN PARTNERS, LLC | Little Rock, AR | Active 2017 |
| MARTIN, FISHER, THOMPSON & ASSOCIATES | WASHINGTON, DC | Active 2007–2012 |
| MARTIN'S POINT HEALTHCARE INC. | Portland, ME | Active 2024–2026 |
| MARTINEZ, ANTONIO C. II LLC | Croton on Hudson, NY | Active 2014 |
| MARVELL TECHNOLOGY, INC. | Wilmington, DE | Active 2021–2026 |
| MARY DEWHIRST | ARLINGTON, VA | Active 2007–2010 |
| MARY E. SHIELDS GOVERNMENT RELATIONS, LLC | Chevy Chase, MD | Active 2008–2014 |
| MARY JO HOEKSEMA | Vienna, VA | Active 2009–2020 |
| MARY JO MCGUIRE | St. Paul,, MN | Active 2010–2011 |
| MARY KAY INC. | DALLAS, TX | Active 2007–2012 |
| MARY LANDRIEU | Washington, DC | Active 2015–2016 |
| MARY LEE MCGUIRE | WASHINGTON, DC | Active 2007–2010 |
| MARY PENDERGAST | Washington, DC | Active 2008–2009 |
| MARY PETERS CONSULTING, LLC | Peoria, AZ | Active 2017–2018 |
| MARY SCHNEIDER | Houston, TX | Active 2007–2016 |
| MARY ZUBROW | Pittsburgh, PA | Active 2008–2009 |
| MARYLAND & DISTRICT OF COLUMBIA CREDIT UNION ASSOCIATION | Columbia, MD | Active 2007–2026 |
| MARYNA PRYKHODKO | Washington, DC | Active 2022–2023 |
| MASA GROUP, LLC | Washington, DC | Active 2021–2026 |
| MASCIA GROUP LLC | Cambridge, MA | Active 2018–2019 |
| MASCO CORPORATION | Livonia, MI | Active 2009–2026 |
| MASIELLO MARTUCCI HUGHES KULPA(FKA MASIELLO, MARTUCCI & ASSOCIATES | BUFFALO, NY | Active 2007–2026 |
| MASIMO CORPORATION | Irvine, CA | Active 2019–2026 |
| MASON CONSULTING, LLC | Washington, DC | Active 2010–2026 |
| MASON CONTRACTORS ASSOCIATION OF AMERICA | Schaumburg, IL | Active 2007–2008 |
| MASON STREET CONSULTING, LLC | Alexandria, VA | Active 2019–2026 |
| MASS GENERAL BRIGHAM (FORMERLY KNOWN AS PARTNERS HEALTHCARE) | Boston, MA | Active 2008–2026 |
| MASSACHUSETTS AFFORDABLE RELIABLE ELECTRICITY ALLIANCE (MASS AREA) | Boston, MA | Active 2007–2012 |
| MASSACHUSETTS BIOTECHNOLOGY COUNCIL | Cambridge, MA | Active 2008–2026 |
| MASSACHUSETTS INSTITUTE OF TECHNOLOGY | CAMBRIDGE, MA | Active 2007–2026 |
Names and addresses as the register lists them. Years active spans the first and latest year of any filing by the registrant, including registrations and amendments.