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 |
|---|---|---|
| HSB ADVANTAGE, LLC | Raleigh, NC | Active 2024 |
| HSBC TECHNOLOGY AND SERVICES USA INC. | WASHINGTON, DC | Active 2007–2026 |
| HSS | HOSPITAL FOR SPECIAL SURGERY | New York, NY | Active 2026 |
| HTC AMERICA, INC. | Bellevue, WA | Active 2011–2016 |
| HUAWEI TECHNOLOGIES USA INC. | Washington, DC | Active 2012–2022 |
| HUDGINS STRATEGIC PARTNERS, LLC | Alexandria, VA | Active 2026 |
| HUDSON COOK, LLP | WASHINGTON, DC | Active 2007–2026 |
| HUDSON HOLLISTER, LLC | Washington, DC | Active 2013–2015 |
| HUDSON PARK GROUP | San Diego, CA | Active 2015–2016 |
| HUDSON TG, LLC | New York, NY | Active 2008–2013 |
| HUELLMANTEL & AFFILIATES | Tempe, AZ | Active 2026 |
| HUGH HANES | HURON, OH | Active 2007–2016 |
| HUGHES & LUCE , L.L.P. | Dallas, TX | Active 2007 |
| HUGHES LAWYERS, LLC | St. Louis, MO | Active 2017–2021 |
| HUGHES NETWORK SYSTEMS | GERMANTOWN, MD | Active 2007 |
| HUGHES, HUBBARD & REED | Washington, DC | Active 2009–2020 |
| HUMAN COALITION | Plano, TX | Active 2026 |
| HUMAN COALITION ACTION | Plano, TX | Active 2024–2026 |
| HUMAN RIGHTS CAMPAIGN | WASHINGTON, DC | Active 2007–2026 |
| HUMAN RIGHTS FIRST | NEW YORK, NY | Active 2007–2026 |
| HUMAN RIGHTS FOR KIDS | Washington, DC | Active 2021–2022 |
| HUMAN RIGHTS WATCH | NEW YORK, NY | Active 2007–2008 |
| HUMANA, INC. | LOUISVILLE, KY | Active 2007–2026 |
| HUMANE WORLD ACTION FUND AND AFFILIATES (FORMERLY KNOWN AS HUMANE SOCIETY LEGISLATIVE FUND) | Washington, DC | Active 2011–2026 |
| HUMANITY FORWARD | Washington, DC | Active 2020–2023 |
| HUMMINGBIRD STRATEGIES, LLC | Washington, DC | Active 2009–2012 |
| HUNT ALTERNATIVES, LLC | Cambridge, MA | Active 2012–2016 |
| HUNT GROUP DC | Alexandria, VA | Active 2008–2026 |
| HUNTER AND COMPANY COMMUNICATIONS, LLC | Layton, UT | Active 2011–2015 |
| HUNTER ST. DEVELOPMENT LLC | Hoboken, NJ | Active 2026 |
| HUNTINGTON BANCSHARES INCORPORATED | COLUMBUS, OH | Active 2007–2026 |
| HUNTINGTON INGALLS INDUSTRIES INCORPORATED | Arlington, VA | Active 2011–2026 |
| HUNTON ANDREWS KURTH LLP (FORMERLY HUNTON & WILLIAMS LLP) | Washington, DC | Active 2007–2026 |
| HUNTSMAN CORPORATION | WOODLANDS, TX | Active 2007–2019 |
| HUNTSMAN INTERNATIONAL LLC | Woodlands, TX | Active 2019–2026 |
| HUONG C. "SUSAN" LYONS | FAIRFAX STATION, VA | Active 2007–2014 |
| HURST INTERNATIONAL CONSULTING LLC | Washington, DC | Active 2025 |
| HURT NORTON LLC | Washington, DC | Active 2022–2025 |
| HURT, NORTON & ASSOCIATES, INC. | WASHINGTON, DC | Active 2007–2021 |
| HUSCH BLACKWELL, LLP | Washington, DC | Active 2007–2026 |
| HUSK PARTNERS | PHOENIX, AZ | Active 2007–2011 |
| HUTTON STRATEGIES | Bethesda, MD | Active 2007–2026 |
| HUTTON-TRANSCON JOINT VENTURE | Bethesda, MD | Active 2019–2021 |
| HUXLEY ROCK LLC | TOPEKA, KS | Active 2023 |
| HWG LLP (F/K/A HARRIS, WILTSHIRE & GRANNIS LLP) | Washington, DC | Active 2007–2026 |
| HWL AEROSPACE POLICY, LLC | Fernandina Beach, FL | Active 2023 |
| HYDE PARK COMMUNICATIONS | Washington, DC | Active 2007–2010 |
| HYDRO GREEN ENERGY, LLC | Houston, TX | Active 2009 |
| HYDROCEPHALUS ASSOCIATION | North Bethesda,, MD | Active 2025 |
| HYJEK & FIX, INC. | Washington, DC | Active 2007–2013 |
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.