Company lists · Data refreshed November 2026

Top 25 Integrated marketing communications agencies worldwide

Name: Integrated marketing communications agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 101,994 companies tracked

RevenueBase identified 101,994 company matches for integrated marketing communications agencies worldwide as of November 2026 and tracks 849,973 professional contacts across them, including 185,156 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for integrated marketing communications agencies 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 integrated marketing communications agencies 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

101,994Companies

849,973Contacts tracked

185,156Verified emails

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The 25 largest integrated marketing communications agencies worldwide

Ranked by team size

Top 25 of 101,994 company matches for integrated marketing communications agencies 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Ogilvy	Exact match	New York, United StatesHQ recorded Nov 6, 2026	10001+	12,961 contacts →
	Exact match “Ogilvy has been creating impact for brands through iconic, culture-changing, value-driving ideas since the company was founded by David Ogilvy 75 years ago.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Edelman	Exact match	New York, GA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	6,721 contacts →
	Exact match “Edelman is a global communications firm that partners with businesses and organizations to evolve, promote and protect their brands and reputations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	WPP	Exact match	London, FranceHQ recorded Nov 6, 2026	10001+	6,648 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	IPG Mediabrands	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	4,396 contacts →
	Exact match “IPG Mediabrands is the media and marketing solutions division of Interpublic Group (NYSE: IPG).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Thompson	Exact match	New York, United StatesHQ recorded Nov 6, 2026	5,001-10,000	3,822 contacts →
	Exact match “J.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Mediacom	Exact match	London, NY, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	3,500 contacts →
	Exact match “Hello.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	OTHER	Exact match	Toronto, FL, CanadaHQ recorded Nov 6, 2026	n/a	3,078 contacts →
	Exact match “Other.™ is a modern integrated media agency built for marketers who need more from their agency partner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Digitas North America	Exact match	Boston, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,860 contacts →
	Exact match “Digitas is the Networked Experience Agency, built on the vision that we create magnetic experiences that earn the right for brands to exist in human networks.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	GREY	Exact match	New York, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,800 contacts →
	Exact match “Grey’s mission is to create Famously Effective ideas that move people, business, and the world forward-harnessing the power of creativity to solve business problems and deliver…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Omnicom	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	2,762 contacts →
	Exact match “Omnicom is the world’s leading marketing and sales company, built for intelligent growth in the next era.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Mccann Worldgroup	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	2,664 contacts →
	Exact match “McCann Worldgroup, part of the Interpublic Group (NYSE: IPG), is the irrefutable leader in the business of creativity.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Horizon Media	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,506 contacts →
	Exact match “Horizon Media is a leader in driving business-based outcomes for marketers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Marketizon	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	1,989 contacts →
	Exact match “Marketizon is the leader in developing innovative, multi-channel marketing technologies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Improfit	Exact match	Montevideo, UruguayHQ recorded Nov 6, 2026	n/a	1,851 contacts →
	Exact match “Improfit es una agencia de comunicación corporativa y organizacional fundada en en Montevideo, Uruguay.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Young & Rubicam	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	1,743 contacts →
	Exact match “Y&R is a leading global marketing communications company, with more than 189 offices in 90+ countries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	LLYC	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	1,548 contacts →
	Exact match “Together, we enhance and protect the value of your business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	FSB Comunicação	Exact match	Rio De Janeiro, BrazilHQ recorded Nov 6, 2026	501-1,000	1,387 contacts →
	Exact match “FSB Comunicações is an Integrated Communications agency focused on results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Serviceplan Group	Exact match	Munich, GermanyHQ recorded Nov 6, 2026	5,001-10,000	1,377 contacts →
	Exact match “Serviceplan Group is the largest independent, partner-led agency group in Europe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	TBC	Exact match	Baltimore, MD, United StatesHQ recorded Nov 6, 2026	n/a	1,328 contacts →
	Exact match “TBC is an independently owned, full-service branding, advertising and strategic communications agency with headquarters in Baltimore, Maryland, USA.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Hakuhodo INC	Exact match	Minato-ku, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,310 contacts →
	Exact match “Founded in 1895, Hakuhodo Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	APS Group	Exact match	Stockport, United KingdomHQ recorded Nov 6, 2026	501-1,000	1,303 contacts →
	Exact match “We’ve been delivering marketing and communications since 1961.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Quadcubes	Exact match	Kozhikode, IndiaHQ recorded Nov 6, 2026	n/a	1,056 contacts →
	Exact match “We're not that yet another, ordinary marketing agency!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Brasil Monks	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	1,001-5,000	1,047 contacts →
	Exact match “Monks is the global, data-driven, digital-native operating brand of S4 Capital plc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Madison World	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	1,001-5,000	1,022 contacts →
	Exact match “Madison World, for the last 36 years has been helping clients solve their marketing challenges and generate sustainable profits.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Dentsu X	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	983 contacts →
	Exact match “Welcome to dentsu X.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “integrated marketing communications agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 101,994 integrated marketing communications agencies worldwide

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Integrated marketing communications agencies worldwide at a glance

As of Nov 6, 2026

21.8%Verified-email coverage

8.3Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

69,080

11-50

27,310

51-200

4,004

201-500

790

501-1,000

214

1,001-5,000

120

5,001-10,000

10001+

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 integrated marketing communications agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “integrated marketing communications agencies” 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 185,156 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.

Integrated marketing communications agencies by location

423 lists · largest first

Every Integrated marketing communications 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 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 “integrated marketing communications agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many integrated marketing communications agencies are there worldwide?

RevenueBase identified 101,994 company matches for integrated marketing communications agencies 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?

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

Which country has the most integrated marketing communications agencies?

The United States leads with 20,584 companies, followed by India (7,030) and Brazil (5,587). Every integrated marketing communications agencies list by country and city is linked on this page.

Which city has the most integrated marketing communications agencies?

London leads with 1644 company records, followed by Sao Paulo (1381) and New York (1202).

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 185,156 professional contacts with verified work emails tracked across these 101,994 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.