Company lists · Data refreshed September 2026

Top 25 Media planning agencies worldwide

RevenueBase identified 14,944 media planning agencies worldwide as of September 2026 and tracks 138,166 professional contacts across them, including 32,850 with verified work emails. The United States is the largest market and London the largest hub.

This list covers media planning 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 20, 2026. Country and city lists for media planning 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.

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
14,944Companies
138,166Contacts tracked
32,850Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest media planning agencies worldwide

Ranked by team size
Top 25 of 14,944 media planning agencies 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 agencies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceLondon, United KingdomHQ checked Sep 20, 20265,001-10,0003,247 contacts →

Indirect evidence

“Hello.”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20265,001-10,0002,648 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
3Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 20261,001-5,0002,368 contacts →

Partial evidence

“Horizon Media is a leader in driving business-based outcomes for marketers.”

Source: RevenueBase Database · checked Sep 20, 2026
4Indirect evidenceGreeceHQ checked Sep 20, 20265,001-10,0001,802 contacts →

Indirect evidence

“informal is a company based out of Greece.”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceBaltimore, MD, United StatesHQ checked Sep 20, 2026n/a1,255 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
6Indirect evidenceMinato-ku, United StatesHQ checked Sep 20, 20261,001-5,0001,168 contacts →

Indirect evidence

“Founded in 1895, Hakuhodo Inc.”

Source: RevenueBase Database · checked Sep 20, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 20261,001-5,000706 contacts →

Partial evidence

“Mediahub is an award-winning global media agency and part of Omnicom Media.”

Source: RevenueBase Database · checked Sep 20, 2026
8Indirect evidenceMalvern, PA, United StatesHQ checked Sep 20, 2026501-1,000572 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
9Partial evidenceStamford, CT, United StatesHQ checked Sep 20, 2026201-500498 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
10Indirect evidenceWashington, NC, United StatesHQ checked Sep 20, 2026n/a468 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
11Partial evidenceLondon, United KingdomHQ checked Sep 20, 2026201-500457 contacts →

Partial evidence

“We are a Global digital media agency specializing in taking a human approach to connecting brands with people across all channels.”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidenceBoston, MA, United StatesHQ checked Sep 20, 2026201-500447 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
13Partial evidenceAtlanta, GA, United StatesHQ checked Sep 20, 2026201-500447 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
14Indirect evidenceRaleigh, NC, United StatesHQ checked Sep 20, 2026n/a414 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
15Indirect evidenceKöln, GermanyHQ checked Sep 20, 2026501-1,000413 contacts →

Indirect evidence

“Dürfen wir uns vorstellen?”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202651-200405 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
17Indirect evidenceHamburg, GermanyHQ checked Sep 20, 2026501-1,000381 contacts →

Indirect evidence

“pilot is one of the largest independent and owner-managed agency groups in Germany.”

Source: RevenueBase Database · checked Sep 20, 2026
18Partial evidenceAuckland, New ZealandHQ checked Sep 20, 202651-200345 contacts →

Partial evidence

“MBM was founded in 2010, and became New Zealand’s largest independent media agency with over 100 staff in its Auckland and Wellington offices.”

Source: RevenueBase Database · checked Sep 20, 2026
19Indirect evidenceGurgaon, IndiaHQ checked Sep 20, 202651-200344 contacts →

Indirect evidence

“Established in 2013,#ARM Worldwide is a renowned digital advertising and marketing communications enterprise that specializes in developing and implementing digital strategies…”

Source: RevenueBase Database · checked Sep 20, 2026
20Indirect evidenceMumbai, IndiaHQ checked Sep 20, 202651-200335 contacts →

Indirect evidence

“We are enriched with over two decades of experience.”

Source: RevenueBase Database · checked Sep 20, 2026
21Indirect evidenceDurham, NC, United StatesHQ checked Sep 20, 2026201-500328 contacts →

Indirect evidence

“McKinney is a full-service creative agency that generates unfair attention for brands.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceKansas City, MO, United StatesHQ checked Sep 20, 2026501-1,000323 contacts →

Indirect evidence

“This page is being closed.”

Source: RevenueBase Database · checked Sep 20, 2026
23Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 20, 2026n/a323 contacts →

Indirect evidence

“Bending rules.”

Source: RevenueBase Database · checked Sep 20, 2026
24Partial evidenceLondon, United KingdomHQ checked Sep 20, 2026201-500295 contacts →

Partial evidence

“the7stars is the UK’s largest independent media agency, offering the best people, the best service and the best creative media campaigns.”

Source: RevenueBase Database · checked Sep 20, 2026
25Indirect evidenceSão Paulo, BrazilHQ checked Sep 20, 2026201-500295 contacts →

Indirect evidence

“cocreative native agency”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 14,944 media planning agencies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 32,850 reachable decision-makers.

Free signup · no credit card

View the full list →

Media planning agencies worldwide at a glance

As of Sep 20, 2026
23.8%Verified-email coverage
9.2Average contacts per company
1-10Median size (employees)
1.3%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
8,810
11-50
5,117
51-200
767
201-500
164
501-1,000
30
1,001-5,000
18
5,001-10,000
9
10001+
8

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 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 media planning agencies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “media planning 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 media planning 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 media planning 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, 32,850 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 agencies by location

75 lists · largest first

Every Media planning 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 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 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 media planning agencies are there worldwide?

RevenueBase identified 14,944 media planning 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?

Mediacom, headquartered in London, tops this list with the largest team on record.

Which country has the most media planning agencies?

The United States leads with 3,243 companies, followed by India (1,284) and Brazil (741). Every media planning agencies list by country and city is linked on this page.

Which city has the most media planning agencies?

London leads with 195 headquartered companies, followed by Sao Paulo (166) and New York (159).

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 32,850 verified decision-maker contacts tracked across these 14,944 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.

Ready to reach these companies? Verified emails and direct dials for all 14,944 media planning agencies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.