Company lists · Data refreshed September 2026

Top 25 Media planning and buying firms worldwide

Name: Media planning and buying firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 35,589 companies tracked

RevenueBase identified 35,589 company matches for media planning and buying firms worldwide as of September 2026 and tracks 439,428 professional contacts across them, including 104,983 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for media planning and buying firms 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 September 20, 2026. Country and city lists for media planning and buying firms 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 Sep 20, 2026 How this list was built

35,589Companies

439,428Contacts tracked

104,983Verified emails

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The 25 largest media planning and buying firms worldwide

Ranked by team size

Top 25 of 35,589 company matches for media planning and buying firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	QUAD	Exact match	Sussex, WI, United StatesHQ recorded Sep 20, 2026	10001+	9,567 contacts →
	Exact match “Quad (NYSE: QUAD) is a global marketing experience company that helps brands make direct consumer connections, from household to in-store to online.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Publicis Media	Exact match	London, United KingdomHQ recorded Sep 20, 2026	10001+	6,901 contacts →
	Exact match “Publicis Media harnesses the power of modern media through leading agency brands Dysrupt, Infinite Roar, Publicis Collective, Publicis Health Media, Spark Foundry, Starcom and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Starcom	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	5,001-10,000	5,520 contacts →
	Exact match “With a history that dates back over 80 years, Starcom is a global communications planning and media leader.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	IPG Mediabrands	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	4,963 contacts →
	Exact match “IPG Mediabrands is the media and marketing solutions division of Interpublic Group (NYSE: IPG).” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	The Trade Desk	Exact match	Ventura, CA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	4,307 contacts →
	Exact match “It's more than just clicks.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Zenith	Exact match	London, United KingdomHQ recorded Sep 20, 2026	5,001-10,000	4,133 contacts →
	Exact match “Zenith is the ROI Agency.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	PHD	Exact match	Bankside, GermanyHQ recorded Sep 20, 2026	1,001-5,000	4,068 contacts →
	Exact match “Welcome to PHD.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Omnicom Media Group	Exact match	New York, United StatesHQ recorded Sep 20, 2026	10001+	3,989 contacts →
	Exact match “Omnicom Media Group (OMG), the media services division of Omnicom Group Inc, delivers transformational experiences for consumers, clients, and talent.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Mediacom	Exact match	London, United KingdomHQ recorded Sep 20, 2026	5,001-10,000	3,247 contacts →
	Exact match “Hello.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Initiative	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	5,001-10,000	2,980 contacts →
	Exact match “Initiative unlocks business growth for the world’s most ambitious brands.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Spark Foundry	Exact match	NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	2,822 contacts →
	Exact match “As one of the fastest-growing global media agency networks, Spark Foundry is not beholden to legacy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	OTHER	Exact match	Toronto, ON, CanadaHQ recorded Sep 20, 2026	n/a	2,671 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 · Sep 20, 2026 · View company records in RevenueBase
13	GREY	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	5,001-10,000	2,648 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 · Sep 20, 2026 · View company records in RevenueBase
14	Horizon Media	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	2,368 contacts →
	Exact match “Horizon Media is a leader in driving business-based outcomes for marketers.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Iprospect	Exact match	London, United KingdomHQ recorded Sep 20, 2026	5,001-10,000	2,366 contacts →
	Exact match “iProspect, a dentsu company, is a leading global digital-first media agency.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	CARAT	Exact match	London, United KingdomHQ recorded Sep 20, 2026	5,001-10,000	2,182 contacts →
	Exact match “Carat is the world’s first media agency and is privileged to work with some of today’s most storied and innovative brands.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Informal	Exact match	GreeceHQ recorded Sep 20, 2026	5,001-10,000	1,802 contacts →
	Exact match “informal is a company based out of Greece.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Schbang	Exact match	Mumbai, IndiaHQ recorded Sep 20, 2026	1,001-5,000	1,548 contacts →
	Exact match “Schbang is a Creative, Media & Technology Transformation Company founded in 2015 by Harshil Karia & , Sohil Karia.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Bbdo Worldwide	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	5,001-10,000	1,501 contacts →
	Exact match “Do Big Things” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Vaynermedia	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,395 contacts →
	Exact match “VaynerMedia is a contemporary global creative and media agency with an expertise in driving relevance for clients and delivering impactful business results.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Hearts & Science	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,359 contacts →
	Exact match “Hearts & Science, an Omnicom Media Group agency, transforms data signals into meaningful connections between brands and consumers that drive exponential growth.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	TBC	Exact match	Baltimore, MD, United StatesHQ recorded Sep 20, 2026	n/a	1,255 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 · Sep 20, 2026 · View company records in RevenueBase
23	CMI Media Group	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,236 contacts →
	Exact match “CMI Media Group, a WPP company, is a global, full-service media agency focused solely on health, wellness, life sciences and pharmaceutical marketing.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Tinuiti	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,173 contacts →
	Exact match “Tinuiti is a media agency that not only builds brands, but architects business outcomes.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Hakuhodo INC	Exact match	Minato-ku, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,168 contacts →
	Exact match “Founded in 1895, Hakuhodo Inc.” Recorded in the RevenueBase company graph · Sep 20, 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 “media planning and buying firms”. 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 35,589 media planning and buying firms worldwide

See the full list, filter by size, metro and specialty, and access 104,983 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Media planning and buying firms worldwide at a glance

As of Sep 20, 2026

23.9%Verified-email coverage

12.3Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

20,565

11-50

11,935

51-200

2,216

201-500

522

501-1,000

128

1,001-5,000

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 media planning and buying firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “media planning and buying firms” 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 104,983 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 September 20, 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.

Media planning and buying firms by location

186 lists · largest first

Every Media planning and buying firms 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 “media planning and buying firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many media planning and buying firms are there worldwide?

RevenueBase identified 35,589 company matches for media planning and buying firms worldwide as of September 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?

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

Which country has the most media planning and buying firms?

The United States leads with 7,634 companies, followed by India (3,156) and Brazil (1,643). Every media planning and buying firms list by country and city is linked on this page.

Which city has the most media planning and buying firms?

London leads with 599 company records, followed by New York (497) and Mumbai (418).

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 104,983 professional contacts with verified work emails tracked across these 35,589 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 September 20, 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.