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 |
|---|---|---|
| HEYDINGER, TED A. | AUSTIN, TX | Active 2007 |
| HF MANAGEMENT SERVICES, LLC FKA HEALTHFIRST | New York, NY | Active 2015–2026 |
| HF SINCLAIR CORPORATION | Dallas, TX | Active 2012–2026 |
| HICKAM PUBLIC AFFAIRS INC. | Topeka, KS | Active 2011–2013 |
| HICKS PARTNERS | Columbus, OH | Active 2007–2018 |
| HICKS-RAY ASSOCIATES | WACO, TX | Active 2007–2026 |
| HICKS-RICHARDSON ASSOCIATES | SPRINGFIELD, VA | Active 2007–2026 |
| HIDDEN LEVEL, INC. | Syracuse, NY | Active 2025–2026 |
| HIGGINS AND ASSOCIATES | Kansas City, MO | Active 2008–2009 |
| HIGH STREET STRATEGIES LLC | Washington, DC | Active 2015–2026 |
| HIGHGROUND INC | Phoenix, AZ | Active 2017 |
| HIGHLAND ELECTRIC FLEETS, INC. | Beverly, MA | Active 2024–2026 |
| HIGHLAND STRATEGIES, LLC | Washington, DC | Active 2021–2023 |
| HIGHMARK, INC. | CAMP HILL, PA | Active 2007–2026 |
| HILARY SILLS | WASHINGTON, DC | Active 2007–2018 |
| HILDEBRAND TEWES CONSULTING | SOUIX FALLS, SD | Active 2007 |
| HILL & KNOWLTON STRATEGIES, LLC | New York, NY | Active 2007–2020 |
| HILL & ROBBINS, PC | DENVER, CO | Active 2007–2026 |
| HILL CAPITOL STRATEGIES | Maple Grove, MN | Active 2025 |
| HILL CONSULTING, LLC | Arlington, VA | Active 2013–2014 |
| HILL EAST GROUP, LLC | Washington, DC | Active 2017–2026 |
| HILL IMPACT | Arlington, VA | Active 2016–2021 |
| HILL PARTNER, LLC | Washington, DC | Active 2007–2023 |
| HILL STRATEGY LLC | DAVIS, WV | Active 2014–2023 |
| HILL-ROM HOLDINGS | Batesville, IN | Active 2009–2021 |
| HILL, GOSDECK & MCGRAW, LLC | Albany, NY | Active 2025 |
| HILL, JOHN ALBERT JR | WASHINGTON, DC | Active 2007 |
| HILL, WANDA | ALEXANDRIA, VA | Active 2007 |
| HILLCO PARTNERS | Austin, TX | Active 2007–2026 |
| HILLCREST STRATEGIES LLC (FKA NICHOLAS FLOCKEN) | Alexandria, VA | Active 2021–2025 |
| HILLENBRAND, INC. | Batesville, IN | Active 2017–2020 |
| HILLIARD SMITH & HUNT | Birmingham, AL | Active 2021–2023 |
| HILLNORTH LLC | Washington, DC | Active 2019–2026 |
| HILLS STERN & MORLEY, LLP | Washington, DC | Active 2012–2014 |
| HILLSBOROUGH COUNTY AVIATION AUTHORITY | TAMPA, FL | Active 2007–2026 |
| HILLSCAPE ASSOCIATES, LLC | WASHINGTON, DC | Active 2007–2012 |
| HILLSTAFFER, LLC | Washington, DC | Active 2014–2026 |
| HILLTOP ADVOCACY | Rancho Mission Viejo, CA | Active 2016–2026 |
| HILTON ADVISORS LLC | Potomac, MD | Active 2009 |
| HILTON WORLDWIDE | McLean, VA | Active 2009–2026 |
| HIMS & HERS HEALTH, INC. | Sausalito, CA | Active 2025–2026 |
| HINMAN STRAUB P.C. | ALBANY, NY | Active 2007–2014 |
| HIRE CALLING HOLDING COMPANY | Klamath Falls, OR | Active 2008–2013 |
| HIRSCHBERG, P.C. | BETHESDA, MD | Active 2007–2009 |
| HISPANIC ASSOCIATION OF COLLEGES AND UNIVERSITIES | Washington, DC | Active 2007–2026 |
| HISPANIC STRATEGY GROUP | Washington, DC | Active 2007–2012 |
| HITACHI ENERGY USA INC | Raleigh, NC | Active 2020–2026 |
| HITACHI, LTD | WASHINGTON, DC | Active 2007–2026 |
| HITHER CREEK STRATEGIES, LLC | Alexandria, VA | Active 2023–2026 |
| HITRUST | Frisco, TX | Active 2019–2023 |
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.