Company lists · Data refreshed September 2026

Top 25 Media planning firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 24,263 companies tracked

RevenueBase identified 24,263 media planning firms worldwide as of September 2026 and tracks 216,950 professional contacts across them, including 49,098 with verified work emails. The United States is the largest market and London the largest hub.

This list covers media planning firms 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 20, 2026. Country and city lists for media planning firms 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 20, 2026 86% judged on-target in blind review

24,263Companies

216,950Contacts tracked

49,098Verified emails

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The 25 largest media planning firms worldwide

Ranked by team size

Top 25 of 24,263 media planning firms worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to media planning firms: 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	Initiative	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	5,001-10,000	2,980 contacts →
	Indirect evidence “Initiative unlocks business growth for the world’s most ambitious brands.” Source: RevenueBase Database · checked Sep 20, 2026
2	OTHER	Partial evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	n/a	2,671 contacts →
	Partial evidence “Other.™ is a modern integrated media agency built for marketers who need more from their agency partner.” Source: RevenueBase Database · checked Sep 20, 2026
3	GREY	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	5,001-10,000	2,648 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
4	Horizon Media	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,368 contacts →
	Partial evidence “Horizon Media is a leader in driving business-based outcomes for marketers.” Source: RevenueBase Database · checked Sep 20, 2026
5	Informal	Indirect evidence	GreeceHQ checked Sep 20, 2026	5,001-10,000	1,802 contacts →
	Indirect evidence “informal is a company based out of Greece.” Source: RevenueBase Database · checked Sep 20, 2026
6	TBC	Indirect evidence	Baltimore, MD, United StatesHQ checked Sep 20, 2026	n/a	1,255 contacts →
	Indirect evidence “TBC is an independently owned, full-service branding, advertising and strategic communications agency with headquarters in Baltimore, Maryland, USA.” Source: RevenueBase Database · checked Sep 20, 2026
7	Hakuhodo INC	Indirect evidence	Minato-ku, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,168 contacts →
	Indirect evidence “Founded in 1895, Hakuhodo Inc.” Source: RevenueBase Database · checked Sep 20, 2026
8	IVE Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1,001-5,000	860 contacts →
	Indirect evidence “IVE Group is Australia’s largest diversified marketing company.” Source: RevenueBase Database · checked Sep 20, 2026
9	COX Media	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	501-1,000	857 contacts →
	Partial evidence “Cox Media is your partner for marketing success, offering advanced cable and digital advertising products in 22 markets across the United States.” Source: RevenueBase Database · checked Sep 20, 2026
10	Essence	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	782 contacts →
	Indirect evidence “Formerly Essence, we are now EssenceMediacom.” Source: RevenueBase Database · checked Sep 20, 2026
11	Mediahub Worldwide	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	706 contacts →
	Partial evidence “Mediahub is an award-winning global media agency and part of Omnicom Media.” Source: RevenueBase Database · checked Sep 20, 2026
12	TING	Partial evidence	Mumbai, IndiaHQ checked Sep 20, 2026	501-1,000	661 contacts →
	Partial evidence “ting is an integrated creative agency established in 2009, built for brands that want strategy, ideas, media and production working as one.” Source: RevenueBase Database · checked Sep 20, 2026
13	Stream Companies	Indirect evidence	Malvern, PA, United StatesHQ checked Sep 20, 2026	501-1,000	572 contacts →
	Indirect evidence “Stream Companies is a full service advertising agency that specializes in launching, positioning, and long term management of brands on full service contracts and a…” Source: RevenueBase Database · checked Sep 20, 2026
14	Precis	Partial evidence	Stockholm, SwedenHQ checked Sep 20, 2026	201-500	535 contacts →
	Partial evidence “Precis is a modern, tech-powered digital marketing agency specialising in media buying, analytics, creative, and proprietary technology.” Source: RevenueBase Database · checked Sep 20, 2026
15	MG OMD	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	527 contacts →
	Partial evidence “MG OMD, part of Omnicom Media, brings innovation, insight and creativity to the world of media.” Source: RevenueBase Database · checked Sep 20, 2026
16	Kanoon Iran Novin	Indirect evidence	Tehran, IranHQ checked Sep 20, 2026	501-1,000	513 contacts →
	Indirect evidence “KIN pursues to build up and regularly organize various new ideas through application of modern tools by a team of men and women who specialize in professionally demonstrate the…” Source: RevenueBase Database · checked Sep 20, 2026
17	Icon International, INC	Partial evidence	Stamford, CT, United StatesHQ checked Sep 20, 2026	201-500	498 contacts →
	Partial evidence “ICON International is the largest independent principal-based media buyer in the U.S, placing nearly $2 billion annually on behalf of its clients.” Source: RevenueBase Database · checked Sep 20, 2026
18	Martin	Partial evidence	Richmond, VA, United StatesHQ checked Sep 20, 2026	201-500	482 contacts →
	Partial evidence “We are a full-service agency with capabilities in advertising, strategic planning, direct response, digital, data analytics, design and branded content.” Source: RevenueBase Database · checked Sep 20, 2026
19	Nobody	Indirect evidence	Washington, NC, United StatesHQ checked Sep 20, 2026	n/a	468 contacts →
	Indirect evidence “NOBODY® is a social-first agency built for complex challenges, serving leading brands, nonprofits, and the Fortune 500.” Source: RevenueBase Database · checked Sep 20, 2026
20	Arnold Worldwide	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	447 contacts →
	Indirect evidence “Arnold is an independent-minded integrated advertising agency that believes creativity should always be a lever for growth.” Source: RevenueBase Database · checked Sep 20, 2026
21	22squared	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	201-500	447 contacts →
	Partial evidence “For over 100 years, 22squared has helped complex businesses solve their toughest challenges through insight-driven media and creative.” Source: RevenueBase Database · checked Sep 20, 2026
22	CLEAN	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	n/a	414 contacts →
	Indirect evidence “We are CLEAN Advertising and Design, a full-service creative agency with over 28 years of experience delivering ideas that help build brand awareness, engage audiences, and…” Source: RevenueBase Database · checked Sep 20, 2026
23	AD Alliance	Indirect evidence	Köln, GermanyHQ checked Sep 20, 2026	501-1,000	413 contacts →
	Indirect evidence “Dürfen wir uns vorstellen?” Source: RevenueBase Database · checked Sep 20, 2026
24	Crispin	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	405 contacts →
	Indirect evidence “Crispin is the original creative business partner, challenging the industry’s established norms on behalf of our clients to create the most outrageously effective work since 1965.” Source: RevenueBase Database · checked Sep 20, 2026
25	Viamedia	Indirect evidence	Lexington, KY, United StatesHQ checked Sep 20, 2026	201-500	390 contacts →
	Indirect evidence “Viamedia.ai is the nation’s leading independent provider of omnichannel advertising solutions, delivering precision and performance across linear TV, streaming, and digital…” Source: RevenueBase Database · checked Sep 20, 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: media planning firms. 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 media planning firms.
Partial evidence: Its own public description names part of media planning firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name media planning firms. 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 24,263 media planning firms worldwide

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Media planning firms worldwide at a glance

As of Sep 20, 2026

22.6%Verified-email coverage

8.9Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

14,647

11-50

7,986

51-200

1,217

201-500

266

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 media planning firms, 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 media planning firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “media planning firms”. 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 media planning firms), 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 media planning firms, 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, 49,098 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 20, 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.

Media planning firms by location

145 lists · largest first

Every Media planning 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 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 media planning firms, 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 media planning firms are there worldwide?

RevenueBase identified 24,263 media planning firms 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?

Initiative, headquartered in New York, tops this list with the largest team on record.

Which country has the most media planning firms?

The United States leads with 5,140 companies, followed by India (2,276) and Brazil (1,114). Every media planning firms list by country and city is linked on this page.

Which city has the most media planning firms?

London leads with 318 headquartered companies, followed by New York (278) and Mumbai (250).

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 49,098 verified decision-maker contacts tracked across these 24,263 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 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 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.