Company lists · Data refreshed September 2026
Top 25 Research agencies worldwide
RevenueBase identified 18,915 research agencies worldwide as of September 2026 and tracks 352,454 professional contacts across them, including 89,194 with verified work emails. The United States is the largest market and London the largest hub.
This list covers research 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 21, 2026. Country and city lists for research 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.
The 25 largest research agencies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 25,856 contacts → | ||||
Indirect evidence “NielsenIQ (NIQ) is the world’s leading consumer intelligence company, delivering the most complete understanding of consumer buying behavior and revealing new pathways to growth.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 23,892 contacts → | ||||
Indirect evidence “Nielsen shapes the world’s media and content as a global leader in audience insights, data and analytics.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 16,377 contacts → | ||||
Indirect evidence “In our world of rapid change, the need for reliable information to make confident decisions has never been greater.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 5,986 contacts → | ||||
Indirect evidence “Mindshare is a media services brand that accelerates Good Growth for its clients in the age of transformation.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 4,637 contacts → | ||||
Strong evidence “YouGov is a global research data and analytics group, powered by reality.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 3,248 contacts → | ||||
Indirect evidence “Westat offers innovative professional services to help clients improve outcomes in health, education, and social policy.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,973 contacts → | ||||
Indirect evidence “O Ibope – marca latino-americana da Fifty5Blue – entrega clareza para marcas, agências e veículos sobre como as pessoas consomem mídia.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,633 contacts → | ||||
Strong evidence “Numerator is a data and tech company bringing speed and scale to market research.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,475 contacts → | ||||
Indirect evidence “At Mintel, we empower businesses to navigate the future with confidence.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,306 contacts → | ||||
Indirect evidence “Kantar Media is now Fifty5Blue.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,269 contacts → | ||||
Indirect evidence “Comscore (NASDAQ: SCOR) is a global, trusted partner for planning, transacting and evaluating media across platforms.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,260 contacts → | ||||
Strong evidence “GD Research Center Pvt.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,155 contacts → | ||||
Indirect evidence “Welcome to Escalent.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,010 contacts → | ||||
Indirect evidence “A MAIORIA DOS MANIFESTOS DE AGÊNCIA FALA SOBRE O QUE SE ACREDITA.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 931 contacts → | ||||
Indirect evidence “Interpret is a global consumer insights agency that helps companies at the intersection of media, technology, and entertainment.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 795 contacts → | ||||
Strong evidence “Today’s markets demand new research methods.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 785 contacts → | ||||
Indirect evidence “WGSN is the global authority on consumer trend forecasting.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 778 contacts → | ||||
Strong evidence “Research Now SSI is the global leader in digital research data for better insights and business decisions.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 771 contacts → | ||||
Strong evidence “Cint is the technology foundation for continuous research and measurement.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 770 contacts → | ||||
Indirect evidence “MMG is a full-service global health communications group that specializes in patient recruitment and retention.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 764 contacts → | ||||
Strong evidence “Norstat is one of the leading data collectors for market research and insight in Europe and the Americas.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 741 contacts → | ||||
Strong evidence “Verian is a world leading research, evidence, evaluation, and communications agency, providing services to government and the public realm.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 741 contacts → | ||||
Strong evidence “Hansa Research is a full-service global market research agency conducting research in over 100 countries.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 740 contacts → | ||||
Indirect evidence “Six decades in retail taught us something most agencies never learn.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 738 contacts → | ||||
Indirect evidence “We’re on a mission to clarify the digital universe.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: research 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 research agencies.
- Partial evidence
- Its own public description names part of research agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name research 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 18,915 research agencies worldwide
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Research agencies worldwide at a glance
As of Sep 21, 2026Companies by employee count
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 research 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 research agencies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “research 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 research 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 research 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, 89,194 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 21, 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.
Research agencies by location
96 lists · largest firstEvery Research agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Research agencies based in the United States3,662
- Research agencies based in India1,648
- Research agencies based in the United Kingdom1,463
- Research agencies based in Brazil771
- Research agencies based in France568
- Research agencies based in Germany568
- Research agencies based in Australia487
- Research agencies based in Canada440
- Research agencies based in Spain375
- Research agencies based in Mexico358
- Research agencies based in Italy343
- Research agencies based in the Netherlands343
- Research agencies based in Türkiye201
- Research agencies based in South Africa194
- Research agencies based in China178
- Research agencies based in Poland172
- Research agencies based in Argentina154
- Research agencies based in Kenya150
- Research agencies based in Colombia145
- Research agencies based in Indonesia144
- Research agencies based in the United Arab Emirates138
- Research agencies based in Chile126
- Research agencies based in Japan126
- Research agencies based in Nigeria122
- Research agencies based in Pakistan119
- Research agencies based in Belgium111
- Research agencies based in Switzerland110
- Research agencies based in Sweden107
- Research agencies based in Peru99
- Research agencies based in Singapore93
- Research agencies based in Russia87
- Research agencies based in New Zealand76
- Research agencies based in Bangladesh73
- Research agencies based in Portugal73
- Research agencies based in Egypt72
- Research agencies based in Romania72
- Research agencies based in Israel70
- Research agencies based in Denmark66
- Research agencies based in the Philippines62
- Research agencies based in Austria59
- Research agencies based in Ireland54
- Research agencies based in Ecuador53
- Research agencies based in Malaysia52
- Research agencies based in Saudi Arabia52
- Research agencies based in Thailand51
- Research agencies based in Finland50
- Research agencies based in Ukraine49
- Research agencies based in Greece48
- Research agencies based in Bulgaria45
- Research agencies based in Hong Kong44
- Research agencies based in Norway44
- Research agencies based in Vietnam37
- Research agencies based in Hungary34
- Research agencies based in Costa Rica32
- Research agencies based in Serbia25
Cities
- Research agencies based in New York, United States352
- Research agencies based in Sao Paulo, Brazil336
- Research agencies based in Pune, India251
- Research agencies based in New Delhi, India224
- Research agencies based in Mumbai, India183
- Research agencies based in Toronto, Canada169
- Research agencies based in Los Angeles, United States109
- Research agencies based in Chicago, United States106
- Research agencies based in Noida, India92
- Research agencies based in Delhi, India84
- Research agencies based in Hamburg, Germany84
- Research agencies based in San Francisco, United States81
- Research agencies based in Washington, United States79
- Research agencies based in Milano, Italy67
- Research agencies based in Bangalore, India66
- Research agencies based in Berlin, Germany66
- Research agencies based in Atlanta, United States60
- Research agencies based in Rio De Janeiro, Brazil55
- Research agencies based in Gurugram, India52
- Research agencies based in Hyderabad, India52
- Research agencies based in Montreal, Canada52
- Research agencies based in Gurgaon, India48
- Research agencies based in Austin, United States47
- Research agencies based in Boston, United States47
- Research agencies based in Bengaluru, India44
- Research agencies based in Dallas, United States43
- Research agencies based in Milan, Italy42
- Research agencies based in Chennai, India41
- Research agencies based in Kolkata, India40
- Research agencies based in San Diego, United States39
- Research agencies based in Belo Horizonte, Brazil37
- Research agencies based in Denver, United States37
- Research agencies based in Miami, United States35
- Research agencies based in Cincinnati, United States34
- Research agencies based in Seattle, United States34
- Research agencies based in Vancouver, Canada33
- Research agencies based in Minneapolis, United States32
- Research agencies based in New York City, United States31
- Research agencies based in Porto Alegre, Brazil31
- Research agencies based in Philadelphia, United States27
- Research agencies based in Portland, United States26
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 research 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 research agencies are there worldwide?
RevenueBase identified 18,915 research 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?
Nielseniq, headquartered in Chicago, tops this list with the largest team on record.
Which country has the most research agencies?
The United States leads with 3,662 companies, followed by India (1,648) and the United Kingdom (1,463). Every research agencies list by country and city is linked on this page.
Which city has the most research agencies?
London leads with 711 headquartered companies, followed by New York (355) and Sao Paulo (338).
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 89,194 verified decision-maker contacts tracked across these 18,915 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 21, 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.