Company lists · Data refreshed September 2026

Top 25 Lobbying firms worldwide

RevenueBase identified 4,106 company matches for lobbying firms worldwide as of September 2026 and tracks 42,596 professional contacts across them, including 20,326 with verified work emails. The United States is the largest market and Washington the largest hub.

This list covers company matches for lobbying firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026. Country and city lists for lobbying firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
4,106Companies
42,596Contacts tracked
20,326Verified emails
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The 25 largest lobbying firms worldwide

Ranked by team size
Top 25 of 4,106 company matches for lobbying firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCincinnati, OH, United StatesHQ recorded Sep 20, 20261,001-5,0001,980 contacts →

Exact match

“At Taft, we work as one team, driven and committed to helping you succeed.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Sep 20, 20261,001-5,0001,790 contacts →

Exact match

“Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchPhiladelphia, PA, United StatesHQ recorded Sep 20, 20261,001-5,0001,682 contacts →

Exact match

“Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchPittsburgh, PA, United StatesHQ recorded Sep 20, 2026501-1,0001,197 contacts →

Exact match

“Buchanan Ingersoll & Rooney is a national law firm with a proven reputation for providing progressive, industry-leading legal, business, regulatory and government relations advice…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchChicago, IL, United StatesHQ recorded Sep 20, 2026501-1,0001,194 contacts →

Exact match

“At Jenner & Block, we shape what’s next through experience, vision, and judgment.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Sep 20, 2026501-1,000933 contacts →

Exact match

“Bracewell LLP is a leading law and government relations firm.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchDenver, CO, United StatesHQ recorded Sep 20, 2026501-1,000902 contacts →

Exact match

“For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Sep 20, 2026501-1,000576 contacts →

Exact match

“Founded in 1983, Wiley is a dominant presence in the nation’s capital.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202651-200411 contacts →

Exact match

“DDC Public Affairs builds communities of advocates that impact policy and win campaigns.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202651-200390 contacts →

Exact match

“Mercury is a national bipartisan government relations and strategic communications firm.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Sep 20, 2026201-500349 contacts →

Exact match

“DKC is a full service public relations, marketing and government affairs firm and part of the Acceleration Community of Companies, Based in New York City, and with offices in Los…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchHarrisburg, PA, United StatesHQ recorded Sep 20, 2026201-500307 contacts →

Exact match

“Since 1935, McNees Wallace & Nurick has been a trusted, client-focused law firm delivering practical, results-driven legal solutions to businesses, individuals, and organizations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchMinneapolis, MN, United StatesHQ recorded Sep 20, 2026201-500281 contacts →

Exact match

“WHO WE ARE At Messerli Kramer, we’ve spent 60 years building a reputation as a firm of “attorneys and advisors” – or, as we like to say, a place where the law isn’t always the…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchLansing, MI, United StatesHQ recorded Sep 20, 2026n/a268 contacts →

Exact match

“Our Mission: Improving the quality of life for residents of Michigan and beyond through the development and implementation of innovative, actionable public policies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchWashington, DC, United StatesHQ recorded Sep 20, 2026201-500255 contacts →

Exact match

“Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202651-200243 contacts →

Exact match

“The Services You Need BGR Group offers an integrated suite of bipartisan lobbying, strategic communications and advocacy solutions that help meet challenges in a risky…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202651-200230 contacts →

Exact match

“Keller and Heckman, founded in 1962, has a broad practice in the areas of regulatory law, public policy, and litigation, serving both domestic and international clients.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202651-200220 contacts →

Exact match

“SKDK provides strategic advice, public relations, crisis communications, advertising, direct mail, and research to national and international companies, advocacy organizations…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchWashington, DC, United StatesHQ recorded Sep 20, 2026201-500205 contacts →

Exact match

“Excellence isn’t enough.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202651-200198 contacts →

Exact match

“DCI Group is an independent public affairs consulting firm that specializes in public relations, crisis management, grassroots engagement, and digital advocacy.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchArlington, VA, United StatesHQ recorded Sep 20, 2026201-500188 contacts →

Exact match

“Strategy + Execution = Results.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchAustin, TX, United StatesHQ recorded Sep 20, 2026n/a187 contacts →

Exact match

“Since its inception, Lilly & Company has built a unique and comprehensive strategy for providing the best possible services available in political fundraising and grassroots…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202651-200179 contacts →

Exact match

“Global Strategy Group is the go-to public affairs, communications, and research partner for companies, causes, and campaigns.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202651-200166 contacts →

Exact match

“Invariant is a bipartisan business advisory firm, providing strategic advice to companies, trade associations, non-profits, and individuals on how to make Washington work for them.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchNew York, United StatesHQ recorded Sep 20, 2026501-1,000166 contacts →

Exact match

“We are now FGS Global.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 4,106 lobbying firms worldwide

See the full list, filter by size, metro and specialty, and access 20,326 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Lobbying firms worldwide at a glance

As of Sep 20, 2026
47.7%Verified-email coverage
10.4Average contacts per company
1-10Median size (employees)
14.2%Largest-city concentration · Washington
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
3,151
11-50
774
51-200
140
201-500
19
501-1,000
11
1,001-5,000
3
5,001-10,000
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for lobbying firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “lobbying firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 20,326 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Lobbying firms by location

32 lists · largest first

Every Lobbying firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “lobbying firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many lobbying firms are there worldwide?

RevenueBase identified 4,106 company matches for lobbying firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Taft Stettinius & Hollister LLP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most lobbying firms?

The United States leads with 2,511 companies, followed by Canada (125) and France (69). Every lobbying firms list by country and city is linked on this page.

Which city has the most lobbying firms?

Washington leads with 581 company records, followed by Sacramento (106) and Austin (84).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 20,326 professional contacts with verified work emails tracked across these 4,106 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.