Company lists · Data refreshed November 2026

Top 25 Advertising effectiveness consultants worldwide

RevenueBase identified 1,708 company matches for advertising effectiveness consultants worldwide as of November 2026 and tracks 22,250 professional contacts across them, including 6,484 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for advertising effectiveness consultants 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 November 6, 2026. Country and city lists for advertising effectiveness consultants 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 Nov 6, 2026 How this list was built
1,708Companies
22,250Contacts tracked
6,484Verified emails
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The 25 largest advertising effectiveness consultants worldwide

Ranked by team size
Top 25 of 1,708 company matches for advertising effectiveness consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchReston, VA, United StatesHQ recorded Nov 6, 20261,001-5,0001,331 contacts →

Exact match

“Comscore (NASDAQ: SCOR) is a global, trusted partner for planning, transacting and evaluating media across platforms.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,0001,171 contacts →

Exact match

“Kantar Media is now Fifty5Blue.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNorwalk, NY, United StatesHQ recorded Nov 6, 2026201-5001,045 contacts →

Exact match

“Ipsos MMA is committed to enabling our clients to achieve significant brand and marketplace advantages by synergistically leveraging unified marketing & commercial measurement and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000651 contacts →

Exact match

“Ebiquity is the independent authority in Marketing Effectiveness.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMinneapolis, MN, United StatesHQ recorded Nov 6, 2026501-1,000614 contacts →

Exact match

“Ovative Group is an independent, full-funnel media, measurement, and creative firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchNew York, United StatesHQ recorded Nov 6, 202651-200541 contacts →

Exact match

“good apple builds smarter strategies that drive real impact.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBellevue, WA, United StatesHQ recorded Nov 6, 2026201-500392 contacts →

Exact match

“iSpot helps advertisers measure the brand and business impact of TV and streaming advertising, from concept to airing to conversion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchGlendale, CT, United StatesHQ recorded Nov 6, 2026201-500318 contacts →

Exact match

“DISQO is a leading provider of advertising outcomes intelligence, measuring brand and performance outcomes across every media channel to power data-driven marketing decisions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500296 contacts →

Exact match

“mediasense is a global, independent advisor that brings the clarity, connection, and confidence modern marketers need to fuel growth.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchWest Des Moines, IA, United StatesHQ recorded Nov 6, 202651-200227 contacts →

Exact match

“OnMedia utilizes the most advanced technology for targeted digital and TV advertising.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202610001+199 contacts →

Exact match

“MAGNA is the media intelligence unit within IPG Mediabrands and the driving force behind advertising forecasts, understanding consumer behavior, marketplace insights, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchWarsaw, PolandHQ recorded Nov 6, 2026201-500191 contacts →

Exact match

“We are an international research and technology company providing digital and cross-media audience measurement and advanced marketing solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNew York, United StatesHQ recorded Nov 6, 2026201-500174 contacts →

Exact match

“Lifesight is the Agentic Unified Marketing Measurement Platform that helps marketing and finance teams measure true marketing ROI, optimize budgets, and make better decisions with…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200173 contacts →

Exact match

“EDO, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSandpoint, ID, United StatesHQ recorded Nov 6, 202651-200169 contacts →

Exact match

“Kochava Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchKolkata, IndiaHQ recorded Nov 6, 202651-200160 contacts →

Exact match

“We engineer Revenue for DTC brands Keen on partnering with us?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026n/a157 contacts →

Exact match

“The Advertising Research Foundation (ARF) is the only organization that creates and curates objective, original research through education, events, and networking for advertising…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLeamington Spa, United KingdomHQ recorded Nov 6, 202651-200138 contacts →

Exact match

“If nobody notices your advertising, is it even advertising?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200125 contacts →

Exact match

“The global authority on marketing effectiveness.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNew York, United StatesHQ recorded Nov 6, 202651-200122 contacts →

Exact match

“Mediassociates is a leading independent media planning, buying and analytics agency.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchGhent, BelgiumHQ recorded Nov 6, 202651-200120 contacts →

Exact match

“Ipsos Belgium is the largest market research agency in the country, offering its services through its locations in Antwerp, Ghent, and Louvain.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchTehran, IranHQ recorded Nov 6, 202651-200120 contacts →

Exact match

“Established in 2002, EMRC is a full service marketing research agency offering qualitative research, custom research, and its own syndicated products including: A*dx (…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchArlington, TX, United StatesHQ recorded Nov 6, 202651-200119 contacts →

Exact match

“Decision Analyst is a global marketing research and analytical consulting agency, serving a number of Fortune 500 corporations, advertising agencies, and management consulting…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchChicago, IL, United StatesHQ recorded Nov 6, 2026201-50099 contacts →

Exact match

“ID Media is a performance media company that combines the power of expertise and data to anticipate tomorrow's brand needs today.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchCourbevoie, FranceHQ recorded Nov 6, 2026201-50092 contacts →

Exact match

“Kantar Media est le leader reconnu des études et analyses médias, pour les données publicitaires de référence, le profilage et le ciblage des consommateurs avec TGI, et l’analyse…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,708 advertising effectiveness consultants worldwide

See the full list, filter by size, metro and specialty, and access 6,484 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Advertising effectiveness consultants worldwide at a glance

As of Nov 6, 2026
29.1%Verified-email coverage
13.0Average contacts per company
1-10Median size (employees)
3.1%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,038
11-50
499
51-200
109
201-500
30
501-1,000
12
1,001-5,000
8
5,001-10,000
3
10001+
4

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 advertising effectiveness consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “advertising effectiveness consultants” 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 6,484 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 November 6, 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.

Advertising effectiveness consultants by location

14 lists · largest first

Every Advertising effectiveness consultants 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 “advertising effectiveness consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many advertising effectiveness consultants are there worldwide?

RevenueBase identified 1,708 company matches for advertising effectiveness consultants worldwide as of November 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?

Comscore, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most advertising effectiveness consultants?

The United States leads with 357 companies, followed by the United Kingdom (101) and India (88). Every advertising effectiveness consultants list by country and city is linked on this page.

Which city has the most advertising effectiveness consultants?

New York leads with 53 company records, followed by London (47) and Paris (21).

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 6,484 professional contacts with verified work emails tracked across these 1,708 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 November 6, 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.