Company lists · Data refreshed September 2026

Top 24 International government relations firms based in New York, United States

Name: International government relations firms based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 56 companies tracked

RevenueBase identified 56 international government relations firms headquartered in New York, United States as of September 2026 and tracks 3,232 professional contacts across them, including 1,578 with verified work emails. Washington is the largest hub.

This list covers international government relations firms headquartered in New York, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

56Companies

3,232Contacts tracked

1,578Verified emails

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The 24 largest international government relations firms based in New York, United States

Ranked by team size

Top 24 of 56 international government relations firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to international government relations firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	FGS Global	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,814 contacts →
	Indirect evidence “FGS Global is the strategic leadership advisory for a complex world.” Source: RevenueBase Database · checked Sep 20, 2026
2	Mercury Public Affairs, LLC	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	390 contacts →
	Strong evidence “Mercury is a national bipartisan government relations and strategic communications firm.” Source: RevenueBase Database · checked Sep 20, 2026
3	DKC	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	201-500	349 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
4	Omnicom Public Relations	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	5,001-10,000	70 contacts →
	Partial evidence “Omnicom Public Relations brings together more than of the best minds in the communications industry to deliver meaningful, measurable results for clients.” Source: RevenueBase Database · checked Sep 20, 2026
5	The Advance Group TAG	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	11-50	62 contacts →
	Indirect evidence “Founded and led by Scott Levenson since 1990, TAG is a diverse team working together to deliver results.” Source: RevenueBase Database · checked Sep 20, 2026
6	The Parkside Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	11-50	46 contacts →
	Indirect evidence “Described by the New York Times as “a new breed of consultants,” the Parkside Group is a leading public affairs firm.” Source: RevenueBase Database · checked Sep 20, 2026
7	Tusk Strategies	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	11-50	41 contacts →
	Indirect evidence “Tusk Strategies is a 35-person team of some of the most talented and tenacious political, communications, and policy strategists in the country.” Source: RevenueBase Database · checked Sep 20, 2026
8	Gotham Government Relations	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “Harnessing the power of Advocacy, Law, Politics & the Press.” Source: RevenueBase Database · checked Sep 20, 2026
9	LHA	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial evidence “LHA partners with public and private companies to implement custom-designed, strategic investor relations programs.” Source: RevenueBase Database · checked Sep 20, 2026
10	George Arzt Communications, INC	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1-10	18 contacts →
	Strong evidence “George Arzt Communications, Inc.(GAC) is a full-service public, community and government relations firm with extensive experience and extraordinary contacts in media, politics…” Source: RevenueBase Database · checked Sep 20, 2026
11	Taylor Rafferty	Partial evidence	New York, United StatesHQ checked Sep 20, 2026	1-10	15 contacts →
	Partial evidence “Taylor Rafferty is a leading cross-border investor relations, stakeholder and capital markets communications firm.” Source: RevenueBase Database · checked Sep 20, 2026
12	Nicholas & Lence Communications	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	11-50	13 contacts →
	Strong evidence “Nicholas & Lence Communications is a New York City-based strategic communications, public relations and government affairs firm.” Source: RevenueBase Database · checked Sep 20, 2026
13	Gerstman Pllc	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	11-50	12 contacts →
	Strong evidence “Gerstman PLLC is a New York based government relations firm committed to making a difference for those we represent.” Source: RevenueBase Database · checked Sep 20, 2026
14	Mirram Group	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “The MirRam Group is a strategic consulting firm with 25+ years of experience and proven results in government and communications.” Source: RevenueBase Database · checked Sep 20, 2026
15	Metropolitan Communications	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	10 contacts →
	Strong evidence “Metropolitan Communications is a Government Relations company located in 570 Lexington Ave, New York, New York, United States.” Source: RevenueBase Database · checked Sep 20, 2026
16	The Blue OWL Group	Indirect evidence	New York, United StatesHQ checked Sep 20, 2026	1-10	9 contacts →
	Indirect evidence “The Blue Owl Group is a global advisory firm offering turnkey access to a collective of experienced, senior public policy and communications professionals.” Source: RevenueBase Database · checked Sep 20, 2026
17	The Hayes Initiative	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “About Us: The Hayes Initiative (THI) is a full-service public relations firm providing strategic counsel and support on a range of needs including communications, media outreach…” Source: RevenueBase Database · checked Sep 20, 2026
18	Urban Strategies LLC	Partial evidence	New York, United StatesHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “Urban Strategies LLC provides strategic planning, advocacy counsel and government affairs to major companies, non-profit organizations and cause-related efforts by building a…” Source: RevenueBase Database · checked Sep 20, 2026
19	Tonio Burgos And Associates	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “TBA has experience in a variety of industries and is also well equipped to tackle issues and challenges that might not fit in a particular box.” Source: RevenueBase Database · checked Sep 20, 2026
20	Park&k Public Affairs	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1-10	5 contacts →
	Strong evidence “Park & K Public Affairs provides local and federal government relations and strategic communications guidance to clients from regional offices in Washington D.C, Florida, New…” Source: RevenueBase Database · checked Sep 20, 2026
21	LFA	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “LFA is a global security, intelligence, and defense services firm serving governments, public institutions, and multilateral bodies.” Source: RevenueBase Database · checked Sep 20, 2026
22	The Affila Group	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1-10	4 contacts →
	Strong evidence “The Affila Group is a trusted international consulting firm with operations in New York City, Mexico City, Medellín, San José, and Guayaquil, delivering cutting-edge government…” Source: RevenueBase Database · checked Sep 20, 2026
23	Bamberger & Vlasto	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1-10	4 contacts →
	Partial evidence “Bamberger & Vlasto delivers customized solutions that draw on our extensive experience in government, the media and private sector across a wide range of industries.” Source: RevenueBase Database · checked Sep 20, 2026
24	Valvespring	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Valvespring is a unique consulting firm that takes a 360-degree approach to management, marketing and communications strategy to help clients achieve their business goals.Increase…” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: international government relations firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names international government relations firms.
Partial evidence: Its own public description names part of international government relations firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international government relations firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 24 of 56 international government relations firms based in New York, United States

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International government relations firms based in New York, United States at a glance

As of Sep 20, 2026

48.8%Verified-email coverage

57.7Average contacts per company

1-10Median size (employees)

841.1%Largest-city concentration · Washington

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 56 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among international government relations firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in New York, United States whose own description of what they do matches “international government relations firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names international government relations firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among international government relations firms, and records with no verified work email. Companies headquartered outside New York are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,578 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

International government relations firms by metro in the United States

International government relations firms in Washington471
International government relations firms in New York56
International government relations firms in Austin50
International government relations firms in Sacramento47
International government relations firms in Boston32
International government relations firms in Chicago28
International government relations firms in Alexandria26
International government relations firms in Atlanta26

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names international government relations firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many international government relations firms are there based in New York, United States?

RevenueBase identified 56 international government relations firms headquartered in New York, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

FGS Global, headquartered in New York, tops this list with the largest team on record.

Which city has the most international government relations firms?

Washington leads with 471 headquartered companies, followed by New York (56) and Austin (50).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,578 verified decision-maker contacts tracked across these 56 companies.

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 Smart Search, 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.