Company lists · Data refreshed September 2026

Top 25 Thought leadership agencies worldwide

Name: Thought leadership agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 19,202 companies tracked

RevenueBase identified 19,202 thought leadership agencies worldwide as of September 2026 and tracks 108,283 professional contacts across them, including 26,653 with verified work emails. The United States is the largest market and London the largest hub.

This list covers thought leadership agencies worldwide, 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 22, 2026. Country and city lists for thought leadership agencies follow the table.

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 22, 2026 86% judged on-target in blind review

19,202Companies

108,283Contacts tracked

26,653Verified emails

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The 25 largest thought leadership agencies worldwide

Ranked by team size

Top 25 of 19,202 thought leadership agencies worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to thought leadership agencies: 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	Idol Image Consulting	Indirect evidence	Kula, HI, TürkiyeHQ checked Sep 22, 2026	n/a	12,976 contacts →
	Indirect evidence “IDOL Image Consulting has developed strategies to help individuals, groups or corporate organizations face today’s challenges and fierce competition.” Source: RevenueBase Database · checked Sep 22, 2026
2	Edelman	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	5,001-10,000	6,242 contacts →
	Indirect evidence “Edelman is a global communications firm that partners with businesses and organizations to evolve, promote and protect their brands and reputations.” Source: RevenueBase Database · checked Sep 22, 2026
3	FGS Global	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,814 contacts →
	Partial evidence “FGS Global is the strategic leadership advisory for a complex world.” Source: RevenueBase Database · checked Sep 22, 2026
4	MSL Global	Indirect evidence	Paris, United KingdomHQ checked Sep 22, 2026	1,001-5,000	939 contacts →
	Indirect evidence “MSL is the most powerful influence engine for brands, companies and leaders.” Source: RevenueBase Database · checked Sep 22, 2026
5	Nike Communications, INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	n/a	872 contacts →
	Indirect evidence “We are a full-service communications agency behind some of the world’s most revered and iconic brands.” Source: RevenueBase Database · checked Sep 22, 2026
6	Porter Novelli	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 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 22, 2026
7	Lucas Group	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	10001+	756 contacts →
	Indirect evidence “Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Source: RevenueBase Database · checked Sep 22, 2026
8	Iresearch Services	Indirect evidence	London, United StatesHQ checked Sep 22, 2026	201-500	495 contacts →
	Indirect evidence “We get it.” Source: RevenueBase Database · checked Sep 22, 2026
9	The Hoffman Agency	Strong evidence	San Jose, CA, United StatesHQ checked Sep 22, 2026	201-500	441 contacts →
	Strong evidence “Defining communications broadly to include digital, content marketing, thought leadership as well as traditional PR, The Hoffman Agency knows how to differentiate brands and…” Source: RevenueBase Database · checked Sep 22, 2026
10	Emperor	Indirect evidence	Aldgate, United KingdomHQ checked Sep 22, 2026	201-500	415 contacts →
	Indirect evidence “Emperor is one of the UK's leading employee-owned creative communications agencies.” Source: RevenueBase Database · checked Sep 22, 2026
11	Sunshine Sachs Morgan & Lylis	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	201-500	364 contacts →
	Indirect evidence “Sunshine Sachs Morgan & Lylis is an independent, full-service firm specializing in communications and narrative strategy.” Source: RevenueBase Database · checked Sep 22, 2026
12	DKC	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 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 22, 2026
13	Kekst CNC	Indirect evidence	Paris, United StatesHQ checked Sep 22, 2026	201-500	309 contacts →
	Indirect evidence “Kekst CNC, the international strategic communications consultancy of Publicis Groupe, has pioneered strategic communications to help its clients achieve their most important…” Source: RevenueBase Database · checked Sep 22, 2026
14	PR Pundit Havas RED	Indirect evidence	Gurgaon, IndiaHQ checked Sep 22, 2026	51-200	306 contacts →
	Indirect evidence “PR Pundit Havas Red, part of the Havas Group (one of the world’s largest advertising and communication networks), is an award-winning integrated communications consultancy with a…” Source: RevenueBase Database · checked Sep 22, 2026
15	Reingold, INC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 22, 2026	201-500	282 contacts →
	Indirect evidence “Reingold is a full-service strategic communications and marketing firm, helping clients tell stories that get results.” Source: RevenueBase Database · checked Sep 22, 2026
16	PACE	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 22, 2026	51-200	270 contacts →
	Indirect evidence “We fuel engagement and drive results through the power of content.” Source: RevenueBase Database · checked Sep 22, 2026
17	The Lede Company	Indirect evidence	Beverly Hills, NY, United StatesHQ checked Sep 22, 2026	51-200	247 contacts →
	Indirect evidence “The Lede Company is a full-service strategy, communications and social impact consulting firm, specializing in corporate, entertainment, brand and nonprofit sectors.” Source: RevenueBase Database · checked Sep 22, 2026
18	Joele Frank	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 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 22, 2026
19	LPM Comunicação	Indirect evidence	Lisboa, PortugalHQ checked Sep 22, 2026	51-200	232 contacts →
	Indirect evidence “LPM is the leading Communication and Public Relations consultancy in Portugal.” Source: RevenueBase Database · checked Sep 22, 2026
20	SVM PR And Marketing	Indirect evidence	Providence, RI, United StatesHQ checked Sep 22, 2026	n/a	206 contacts →
	Indirect evidence “Increasing visibility, relevance and value.” Source: RevenueBase Database · checked Sep 22, 2026
21	Headland	Indirect evidence	City Of London, United KingdomHQ checked Sep 22, 2026	51-200	205 contacts →
	Indirect evidence “We are a communications consultancy powered by collaboration.” Source: RevenueBase Database · checked Sep 22, 2026
22	ANGIE	Indirect evidence	Paris, FranceHQ checked Sep 22, 2026	51-200	205 contacts →
	Indirect evidence “Angie est une agence indépendante de 150 personnes.” Source: RevenueBase Database · checked Sep 22, 2026
23	Medialink	Indirect evidence	Beverly Hills, CA, United StatesHQ checked Sep 22, 2026	51-200	204 contacts →
	Indirect evidence “MediaLink is the leading consulting firm serving the media and marketing industry’s C-suite.” Source: RevenueBase Database · checked Sep 22, 2026
24	Moris Media	Indirect evidence	United StatesHQ checked Sep 22, 2026	51-200	199 contacts →
	Indirect evidence “Moris Media is globally recognized as The Digital Doctors, a world-class boutique PR and digital marketing partner trusted for credibility, clarity and long-term growth.” Source: RevenueBase Database · checked Sep 22, 2026
25	Radley Yeldar	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	198 contacts →
	Indirect evidence “Radley Yeldar is an award-winning, independent London and Birmingham-based creative consultancy with more than 200 communications specialists.” Source: RevenueBase Database · checked Sep 22, 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: thought leadership agencies. 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 thought leadership agencies.
Partial evidence: Its own public description names part of thought leadership agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name thought leadership agencies. 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 19,202 thought leadership agencies worldwide

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Thought leadership agencies worldwide at a glance

As of Sep 22, 2026

24.6%Verified-email coverage

5.6Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

16,413

11-50

2,443

51-200

268

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 thought leadership agencies, 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.
Coverage: Every country. Country and city lists for thought leadership agencies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “thought leadership agencies”. 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 thought leadership agencies), 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 thought leadership agencies, and records with no verified work email.
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, 26,653 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 22, 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.

Thought leadership agencies by location

87 lists · largest first

Every Thought leadership agencies 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 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 thought leadership agencies, 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 thought leadership agencies are there worldwide?

RevenueBase identified 19,202 thought leadership agencies worldwide 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?

Idol Image Consulting, headquartered in Kula, tops this list with the largest team on record.

Which country has the most thought leadership agencies?

The United States leads with 5,331 companies, followed by the United Kingdom (1,024) and Brazil (923). Every thought leadership agencies list by country and city is linked on this page.

Which city has the most thought leadership agencies?

London leads with 517 headquartered companies, followed by New York (429) and Paris (342).

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 26,653 verified decision-maker contacts tracked across these 19,202 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 22, 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.