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 |
|---|---|---|
| MCCAIN FOODS USA INC. | Oakbrook Terrace, IL | Active 2022 |
| MCCANN CAPITOL ADVOCATES | MCLEAN, VA | Active 2007–2014 |
| MCCARTER & ENGLISH, LLP | Washington, DC | Active 2020–2026 |
| MCCARTHY ADVANCED CONSULTING LLC | Washington, DC | Active 2017–2026 |
| MCCARTHY STRATEGIC SOLUTIONS | FRANKFORT, KY | Active 2007–2026 |
| MCCARTIN PUBLIC POLICY GROUP LLC | Arlington, VA | Active 2023–2026 |
| MCCARTY FINANCIAL LLC | Alexandria, VA | Active 2017–2024 |
| MCCAULLEY&COMPANY | Rocky River, OH | Active 2014–2026 |
| MCCLAIN HADDOW | Gainesville, VA | Active 2007–2012 |
| MCCLEES CONSULTING, INC. | Oriental, NC | Active 2007–2020 |
| MCCLINTOCK ASSOCIATES, INC. | Edmond, OK | Active 2007–2026 |
| MCCOLL STRATEGIES LLC | Washington, DC | Active 2020–2026 |
| MCCONNELL VALDES PLLC | Washington, DC | Active 2008–2016 |
| MCCORMICK & COMPANY, INCORPORATED | Hunt Valley, MD | Active 2025–2026 |
| MCCOY GOVERNMENTAL AFFAIRS AND LEGALS SERVICES | Aldie, VA | Active 2011–2012 |
| MCDERMOTT INCORPORATED | Houston, TX | Active 2009–2010 |
| MCDERMOTT WILL & SCHULTE LLP | Washington, DC | Active 2007–2026 |
| MCDERMOTT+ LLC | Washington, DC | Active 2014–2026 |
| MCDONALD & HARDEN, LLC | Washington, DC | Active 2011–2014 |
| MCDONALD CONSULTANG FORMERLY SUZANNE MCDONALD | Libertyville, IL | Active 2011 |
| MCDONALD HOPKINS GOVERNMENT STRATEGIES, LLC | Washington, DC | Active 2013–2016 |
| MCDONALD HOPKINS LLC | Cleveland, OH | Active 2007–2014 |
| MCDONALD'S CORPORATION | WASHINGTON, DC | Active 2007–2026 |
| MCGINLEY LLC | Galesville, MD | Active 2025–2026 |
| MCGINN AND COMPANY | Arlington, VA | Active 2017–2020 |
| MCGINNIS LOCKRIDGE | Austin, TX | Active 2022–2026 |
| MCGLOTTEN & JARVIS | WASHINGTON, DC | Active 2007–2016 |
| MCGOVERN & SMITH, LLC | WASHINGTON, DC | Active 2007–2011 |
| MCGRATH & ASSOCIATES | Washington, DC | Active 2009–2023 |
| MCGRAW HILL, LLC | New York, NY | Active 2013–2026 |
| MCGREGOR GROUP, LLC | WASHINGTON, DC | Active 2007–2016 |
| MCGUIREWOODS CONSULTING (A SUBSIDIARY OF MCGUIREWOODS LLP) | Washington, DC | Active 2007–2026 |
| MCGUIREWOODS LLP | Washington, DC | Active 2007–2019 |
| MCHUGH LEMAY ASSOC., LLC | Potomac, MD | Active 2019–2026 |
| MCINTYRE & LEMON, PLLC | Washington, DC | Active 2007–2026 |
| MCKAY CHADWELL, PLLC | SEATTLE, WA | Active 2007–2008 |
| MCKECHNIE & COMPANY | Pittsburg, KS | Active 2020–2023 |
| MCKENNA, LONG & ALDRIDGE | Washington, DC | Active 2007–2015 |
| MCKESSON CORPORATION & ITS AFFILIATE U.S. ONCOLOGY | Irving, TX | Active 2007–2026 |
| MCKINLEY STRATEGIES, LLC | Canton, OH | Active 2020–2026 |
| MCKINNON ASSOC | WINTER PARK, FL | Active 2007 |
| MCKINNON GROUP, LLC | Washington, DC | Active 2025–2026 |
| MCKINNON GROUP. LLC, FORMERLY DOING BUSINESS AS RR&G, LLC | Washington, DC | Active 2007–2026 |
| MCLANE COMPANY, INC. | Temple, TX | Active 2007–2011 |
| MCLARTY INBOUND LLC | Washington, DC | Active 2015–2026 |
| MCLEAN POLITICAL STRATEGIES LLC | Washington, DC | Active 2011–2012 |
| MCLEOD STRATEGIES | Lyn, ON, Canada | Active 2025–2026 |
| MCLUCKIE PARTNERS LLC | Easton, MD | Active 2015–2022 |
| MCM STRATEGIES | Denver, CO | Active 2021 |
| MCMARK LLC | Great Falls, VA | Active 2014–2015 |
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.