Company lists · Data refreshed September 2026

Top 25 Advocacy organizations consulting firms based in New York, United States

Name: Advocacy organizations consulting 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 27, 2026 600 companies tracked

RevenueBase identified 600 advocacy organizations consulting firms headquartered in New York, United States as of September 2026 and tracks 11,821 professional contacts across them, including 5,751 with verified work emails. Across the United States, Washington is the largest hub for this category (1,296 companies); New York follows with 600.

This list covers advocacy organizations consulting 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 27, 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 27, 2026 86% judged on-target in blind review

600Companies

11,821Contacts tracked

5,751Verified emails

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The 25 largest advocacy organizations consulting firms based in New York, United States

Ranked by team size

Top 25 of 600 advocacy organizations consulting firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to advocacy organizations consulting 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 27, 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 27, 2026
2	Porter Novelli	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	821 contacts →
	Indirect evidence “Porter Novelli is the strategic communications company, fueled by innovation, empowering clients to do business better in an ever-changing world.” Source: RevenueBase Database · checked Sep 27, 2026
3	The Vertex Companies LLC	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	765 contacts →
	Partial evidence “The Vertex Companies, LLC is a global consulting firm that provides strategic advisory, project management, and dispute resolution services for organizations that face complex…” Source: RevenueBase Database · checked Sep 27, 2026
4	CCS Fundraising	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	728 contacts →
	Indirect evidence “For over 75 years, CCS Fundraising has empowered many of the world’s greatest organizations to advance some of the most important causes in history.” Source: RevenueBase Database · checked Sep 27, 2026
5	Keystone	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	201-500	423 contacts →
	Partial evidence “Keystone is an innovative strategy, economics, and technology consulting firm delivering transformative ideas and novel solutions to global brands and law firms on leading-edge…” Source: RevenueBase Database · checked Sep 27, 2026
6	Mercury Public Affairs, LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	390 contacts →
	Indirect evidence “Mercury is a national bipartisan government relations and strategic communications firm.” Source: RevenueBase Database · checked Sep 27, 2026
7	DKC	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	201-500	349 contacts →
	Indirect 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 27, 2026
8	Berlinrosen, An Orchestra Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	201-500	302 contacts →
	Indirect evidence “Built to operate with the speed and intensity of a political campaign, BerlinRosen takes a 360-degree approach to communications, activating audiences and elevating story above…” Source: RevenueBase Database · checked Sep 27, 2026
9	Joele Frank	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	201-500	243 contacts →
	Indirect evidence “Joele Frank is a strategic communications firm that enables clients to take control in key moments of challenge and opportunity, from bet-the-company situations to the ongoing…” Source: RevenueBase Database · checked Sep 27, 2026
10	Global Health Strategies GHS	Strong evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	236 contacts →
	Strong evidence “Global Health Strategies (GHS) is an international consulting company that specializes in global health communications, advocacy, research and strategy.” Source: RevenueBase Database · checked Sep 27, 2026
11	TCC Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	n/a	232 contacts →
	Indirect evidence “TCC Group collaborates with leaders to solve complex social problems.” Source: RevenueBase Database · checked Sep 27, 2026
12	Hr&a Advisors	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	213 contacts →
	Indirect evidence “HR & A guides decision makers in cities, including mayors and agency heads, real estate owners and developers, and non-profit leaders, to create impact when the stakes are high…” Source: RevenueBase Database · checked Sep 27, 2026
13	Richard Attias & Associates	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	213 contacts →
	Indirect evidence “OUR VISION: To empower governments, corporations and civil society to lead, inspire, and drive impact on a global scale.” Source: RevenueBase Database · checked Sep 27, 2026
14	Global Strategy Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	179 contacts →
	Indirect evidence “Global Strategy Group is the go-to public affairs, communications, and research partner for companies, causes, and campaigns.” Source: RevenueBase Database · checked Sep 27, 2026
15	Orchestra	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	166 contacts →
	Indirect evidence “Orchestra is a strategic communications and marketing company purpose-built for a world defined by speed, fragmentation and unprecedented transparency.” Source: RevenueBase Database · checked Sep 27, 2026
16	Sanford Heisler Sharp Mcknight, LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	145 contacts →
	Indirect evidence “At Sanford Heisler Sharp McKnight, our team of knowledgeable attorneys is committed to representing clients in their claims against powerful entities.” Source: RevenueBase Database · checked Sep 27, 2026
17	M C Saatchi SSK	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	141 contacts →
	Partial evidence “We bring together powerful earned-first creativity with expertise in brand strategy, social impact, issue advocacy, and corporate reputation.” Source: RevenueBase Database · checked Sep 27, 2026
18	Fenton	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	140 contacts →
	Indirect evidence “At Fenton, we are communications strategists for social change.” Source: RevenueBase Database · checked Sep 27, 2026
19	Hecker Fink LLP	Indirect evidence	New York, United StatesHQ checked Sep 27, 2026	51-200	135 contacts →
	Indirect evidence “At Hecker Fink LLP, we practice law at the highest level, guided by our core values of integrity, innovation, and excellence.” Source: RevenueBase Database · checked Sep 27, 2026
20	Wachsman	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	130 contacts →
	Indirect evidence “Wachsman is a leading strategy and communications firm advising the most advanced companies in technology and financial services.” Source: RevenueBase Database · checked Sep 27, 2026
21	RF Binder	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	122 contacts →
	Indirect evidence “RF\|Binder is a fully integrated communications agency and consultancy that aligns communications and business strategy to achieve results.” Source: RevenueBase Database · checked Sep 27, 2026
22	Kasirer LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	11-50	88 contacts →
	Indirect evidence “Kasirer is NYC's #1 lobbying firm, navigating government on behalf of private sector & nonprofit clients.” Source: RevenueBase Database · checked Sep 27, 2026
23	H Advisors Abernathy	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	86 contacts →
	Indirect evidence “H/Advisors Abernathy is a trusted strategic communications advisor that partners with companies, investment firms and other organizations to engage core stakeholders as they…” Source: RevenueBase Database · checked Sep 27, 2026
24	Alton Aviation Consultancy	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	85 contacts →
	Partial evidence “Alton Aviation Consultancy has significant experience delivering large, complex consulting engagements for clients in aviation and aerospace.” Source: RevenueBase Database · checked Sep 27, 2026
25	Dubin Research & Consulting DRC	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	11-50	63 contacts →
	Partial evidence “Dubin Research & Consulting (DRC) has distinguished itself as one of the finest consulting firms in the nation, specializing in jury selection, demonstrative aids, focus groups…” Source: RevenueBase Database · checked Sep 27, 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: advocacy organizations consulting 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 advocacy organizations consulting firms.
Partial evidence: Its own public description names part of advocacy organizations consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advocacy organizations consulting 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 25 of 600 advocacy organizations consulting firms based in New York, United States

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Advocacy organizations consulting firms based in New York, United States at a glance

As of Sep 27, 2026

48.7%Verified-email coverage

19.7Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

442

11-50

117

51-200

201-500

501-1,000

1,001-5,000

10001+

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 600 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 advocacy organizations consulting 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 “advocacy organizations consulting 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 advocacy organizations consulting 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 advocacy organizations consulting 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, 5,751 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 27, 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.

Advocacy organizations consulting firms by metro in the United States

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 advocacy organizations consulting 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 advocacy organizations consulting firms are there based in New York, United States?

RevenueBase identified 600 advocacy organizations consulting 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 in the United States has the most advocacy organizations consulting firms?

Washington leads the United States with 1,296 headquartered companies, followed by New York (600) and Chicago (327).

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 5,751 verified decision-maker contacts tracked across these 600 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 27, 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.