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 |
|---|---|---|
| DEFCON STRATEGIES | Nashville, TN | Active 2020 |
| DEFENDERS OF WILDLIFE | WASHINGTON, DC | Active 2007–2026 |
| DEFENDERS OF WILDLIFE ACTION FUND | Washington, DC | Active 2007–2015 |
| DEFENDING OUR COUNTRY, LLC | Middleburg, VA | Active 2025–2026 |
| DEFENSE CONSULTING GROUP, LLC | Washington, DC | Active 2011–2026 |
| DEFENSE CREDIT UNION COUNCIL | Washington, DC | Active 2024–2026 |
| DEFENSE METALS TECHNOLOGY CENTER | NORTH CANTON, OH | Active 2007 |
| DEFENSE PRODUCTS MARKETING, INC. | ARLINGTON, VA | Active 2007–2008 |
| DEFENSE STRATEGIC ADVANTAGE, LLC | Stafford, VA | Active 2009–2013 |
| DEFENSE STRATEGY CORP | WASHINGTON DC, DC | Active 2009–2015 |
| DEFI EDUCATION FUND | Washington, DC | Active 2022–2026 |
| DEFINIUM THERAPEUTICS (FKA MIND MEDICINE (MINDMED) INC.) | New York, NY | Active 2025–2026 |
| DEKIEFFER & HORGAN | Washington, DC | Active 2007–2025 |
| DEL MONTE FOODS | San Francisco, CA | Active 2007–2014 |
| DELAHUNT GROUP, LLC | Quincy, MA | Active 2013–2020 |
| DELANEY POLICY GROUP | Boston, MA | Active 2024–2026 |
| DELANY ADVISORY GROUP, LLC | Bethesda, MD | Active 2010–2024 |
| DELAWARE NORTH COMPANIES, INC. | Buffalo, NY | Active 2020–2026 |
| DELEK US HOLDINGS, INC. | Brentwood, TN | Active 2018–2024 |
| DELL TECHNOLOGIES INC. | Washington, DC | Active 2007–2026 |
| DELLUMS & ASSOCIATES, LLC | Washington, DC | Active 2007 |
| DELOITTE & TOUCHE LLP (CANADA) | Toronto, ON, Canada | Active 2011 |
| DELOITTE & TOUCHE LLP | Washington, DC | Active 2007–2008 |
| DELOITTE LLP | Washington, DC | Active 2007–2026 |
| DELOITTE TAX LLP | Washington, DC | Active 2007–2012 |
| DELPHI WORLD GROUP | Largo, FL | Active 2021–2026 |
| DELTA AIR LINES, INC. | WASHINGTON, DC | Active 2007–2026 |
| DELTA COUNCIL | Stoneville, MS | Active 2008–2026 |
| DELTA DENTAL OF CALIFORNIA | San Francisco, CA | Active 2021–2022 |
| DELTA DENTAL PLANS ASSOCIATION | Washington DC, DC | Active 2009–2026 |
| DELTA DEVELOPMENT GROUP, INC. | Camp Hill, PA | Active 2007–2026 |
| DELTA GRASSROOTS CAUCUS | WALDORF, MD | Active 2007–2008 |
| DELTA OFFSHORE ENERGY AMERICA'S LLC | Austin, TX | Active 2021–2026 |
| DELTA STAR, INC | Bethesda, MD | Active 2018–2020 |
| DELTA STRATEGY GROUP | Washington, DC, DC | Active 2007–2026 |
| DELTAHAWK ENGINES, INC. | Racine, WI | Active 2009–2010 |
| DEMAND PROGRESS ACTION, INC | Silver Spring, MD | Active 2015–2026 |
| DEMOCRACY 21 | WASHINGTON, DC | Active 2007–2026 |
| DEMOCRACY FORWARD | Washington, DC | Active 2026 |
| DEMOCRACY SENTRY | Washington, DC | Active 2023–2025 |
| DEMOS | Washington, DC | Active 2009–2016 |
| DEMOSTHENES | ARIZONA CITY, AZ | Active 2007 |
| DEMOTECH | Canal Winchester, OH | Active 2011–2019 |
| DENA SHER | Washington, DC | Active 2015 |
| DENBURY INC. | Plano, TX | Active 2009–2023 |
| DENDREON PHARMACEUTICALS, LLC | Seal Beach, CA | Active 2019–2026 |
| DENISE WILSON | Washington, DC | Active 2016–2017 |
| DENISON SCOTT & COHEN | BETHESDA, MD | Active 2007–2008 |
| DENNIS CARDOZA CONSULTING SERVICES | Sarasota, FL | Active 2026 |
| DENNIS FOREMAN | Front Royal, VA | Active 2007–2009 |
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.