Company lists · Data refreshed September 2026

Top 25 Account advertising companies worldwide

Name: Account advertising companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 32,227 companies tracked

RevenueBase identified 32,227 account advertising companies worldwide as of September 2026 and tracks 206,007 professional contacts across them, including 45,674 with verified work emails. The United States is the largest market and London the largest hub.

This list covers account advertising companies 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 21, 2026. Country and city lists for account advertising companies 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 21, 2026 86% judged on-target in blind review

32,227Companies

206,007Contacts tracked

45,674Verified emails

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The 25 largest account advertising companies worldwide

Ranked by team size

Top 25 of 32,227 account advertising companies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to account advertising companies: 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	PHD	Indirect evidence	Bankside, GermanyHQ checked Sep 21, 2026	1,001-5,000	4,068 contacts →
	Indirect evidence “Welcome to PHD.” Source: RevenueBase Database · checked Sep 21, 2026
2	OTHER	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	n/a	2,671 contacts →
	Indirect evidence “Other.™ is a modern integrated media agency built for marketers who need more from their agency partner.” Source: RevenueBase Database · checked Sep 21, 2026
3	Horizon Media	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,368 contacts →
	Indirect evidence “Horizon Media is a leader in driving business-based outcomes for marketers.” Source: RevenueBase Database · checked Sep 21, 2026
4	Mediaocean	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,050 contacts →
	Partial evidence “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Source: RevenueBase Database · checked Sep 21, 2026
5	Logical Position	Indirect evidence	Lake Oswego, OR, United StatesHQ checked Sep 21, 2026	501-1,000	899 contacts →
	Indirect evidence “Logical Position (LP) is an Inc.” Source: RevenueBase Database · checked Sep 21, 2026
6	Smartly	Partial evidence	Helsinki, FinlandHQ checked Sep 21, 2026	501-1,000	827 contacts →
	Partial evidence “Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers.” Source: RevenueBase Database · checked Sep 21, 2026
7	Mediaplus Group	Indirect evidence	Munich, GermanyHQ checked Sep 21, 2026	1,001-5,000	820 contacts →
	Indirect evidence “Mediaplus is one of Europe’s largest independent, partner-owned media agencies.” Source: RevenueBase Database · checked Sep 21, 2026
8	Interactive Avenues	Indirect evidence	Mumbai, IndiaHQ checked Sep 21, 2026	501-1,000	802 contacts →
	Indirect evidence “Interactive Avenues is India’s leading full-service digital marketing company with offices in Mumbai (headquarters), Gurugram, Bengaluru, Chennai and Kolkata.” Source: RevenueBase Database · checked Sep 21, 2026
9	Stream Companies	Partial evidence	Malvern, PA, United StatesHQ checked Sep 21, 2026	501-1,000	572 contacts →
	Partial 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 21, 2026
10	Precis	Indirect evidence	Stockholm, SwedenHQ checked Sep 21, 2026	201-500	535 contacts →
	Indirect evidence “Precis is a modern, tech-powered digital marketing agency specialising in media buying, analytics, creative, and proprietary technology.” Source: RevenueBase Database · checked Sep 21, 2026
11	Raptive	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	201-500	525 contacts →
	Indirect evidence “Raptive provides higher revenue through superior ad tech, expert strategy, and best-in-class support.” Source: RevenueBase Database · checked Sep 21, 2026
12	Tombras	Indirect evidence	Knoxville, TN, United StatesHQ checked Sep 21, 2026	201-500	496 contacts →
	Indirect evidence “Tombras is a 450+ person, full-service agency with a digital mindset.” Source: RevenueBase Database · checked Sep 21, 2026
13	M C Saatchi Performance	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	457 contacts →
	Indirect 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 21, 2026
14	Unified	Indirect evidence	NY, United StatesHQ checked Sep 21, 2026	201-500	399 contacts →
	Indirect evidence “A best in class team of digital experts leveraging purpose built technology to deliver operational excellence and insights across paid social, programmatic, OTT and digital audio.” Source: RevenueBase Database · checked Sep 21, 2026
15	Viamedia	Partial evidence	Lexington, KY, United StatesHQ checked Sep 21, 2026	201-500	390 contacts →
	Partial 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 21, 2026
16	Localedge	Partial evidence	Buffalo, NY, United StatesHQ checked Sep 21, 2026	501-1,000	383 contacts →
	Partial evidence “LocalEdge, a Hearst Media Services Company, offers a full suite of online advertising products and services for any size business and budget across the country.” Source: RevenueBase Database · checked Sep 21, 2026
17	Innity	Indirect evidence	Petaling Jaya, MalaysiaHQ checked Sep 21, 2026	201-500	357 contacts →
	Indirect evidence “Innity is a leading online media company in Asia that offers best in class data-driven ad tech solutions that combines creative programmatic, ad-serving, data management, audience…” Source: RevenueBase Database · checked Sep 21, 2026
18	MBM	Indirect evidence	Auckland, New ZealandHQ checked Sep 21, 2026	51-200	345 contacts →
	Indirect 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 21, 2026
19	ARM Worldwide	Partial evidence	Gurgaon, IndiaHQ checked Sep 21, 2026	51-200	344 contacts →
	Partial 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 21, 2026
20	Ethinos	Indirect evidence	Mumbai, IndiaHQ checked Sep 21, 2026	201-500	327 contacts →
	Indirect evidence “As a leading digital marketing agency headquartered in Mumbai, with a strong presence across multiple locations in India and even in Australia, Ethinos brings together creative…” Source: RevenueBase Database · checked Sep 21, 2026
21	Openmind Part Of WPP Media	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	51-200	315 contacts →
	Indirect evidence “OPENMIND is a bespoke team within WPP Media, made up of best-in-class digital, offline and integrated media experts who work together for Nestlé.” Source: RevenueBase Database · checked Sep 21, 2026
22	W3haus	Indirect evidence	São Paulo, BrazilHQ checked Sep 21, 2026	201-500	295 contacts →
	Indirect evidence “cocreative native agency” Source: RevenueBase Database · checked Sep 21, 2026
23	Adaan Digital Solutions	Indirect evidence	New Delhi, IndiaHQ checked Sep 21, 2026	201-500	294 contacts →
	Indirect evidence “Adaan specializes in designing and implementing digital marketing services and solutions for SMBs.” Source: RevenueBase Database · checked Sep 21, 2026
24	Harmelin Media	Indirect evidence	Bala Cynwyd, PA, United StatesHQ checked Sep 21, 2026	201-500	292 contacts →
	Indirect evidence “Harmelin Media specializes in full-funnel performance media and marketing solutions and has more than 40 years of experience helping clients navigate the rapidly changing…” Source: RevenueBase Database · checked Sep 21, 2026
25	Newbase	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	282 contacts →
	Partial evidence “At NewBase we provide expert and independent marketing and advertising services across all media channels globally.” Source: RevenueBase Database · checked Sep 21, 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: account advertising companies. 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 account advertising companies.
Partial evidence: Its own public description names part of account advertising companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name account advertising companies. 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 32,227 account advertising companies worldwide

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Account advertising companies worldwide at a glance

As of Sep 21, 2026

22.2%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

21,913

11-50

8,393

51-200

1,360

201-500

334

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 account advertising companies, 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 account advertising companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “account advertising companies”. 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 account advertising companies), 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 account advertising companies, 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, 45,674 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 21, 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.

Account advertising companies by location

178 lists · largest first

Every Account advertising companies 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 account advertising companies, 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 account advertising companies are there worldwide?

RevenueBase identified 32,227 account advertising companies 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?

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

Which country has the most account advertising companies?

The United States leads with 5,934 companies, followed by India (3,109) and Brazil (1,689). Every account advertising companies list by country and city is linked on this page.

Which city has the most account advertising companies?

London leads with 547 headquartered companies, followed by Sao Paulo (336) and New York (311).

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 45,674 verified decision-maker contacts tracked across these 32,227 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 21, 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.