Company lists · Data refreshed September 2026

Top 25 Online display advertising companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 24,529 companies tracked

RevenueBase identified 24,529 company matches for online display advertising companies worldwide as of September 2026 and tracks 185,861 professional contacts across them, including 47,694 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for online display advertising companies 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 21, 2026. Country and city lists for online display advertising companies 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 21, 2026 How this list was built

24,529Companies

185,861Contacts tracked

47,694Verified emails

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The 25 largest online display advertising companies worldwide

Ranked by team size

Top 25 of 24,529 company matches for online display advertising companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	The Trade Desk	Exact match	Ventura, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	4,307 contacts →
	Exact match “It's more than just clicks.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Taboola	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,979 contacts →
	Exact match “Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	TEADS	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,789 contacts →
	Exact match “Teads Holding Co.(“Teads”)(Nasdaq: TEAD) is a leading omnichannel advertising platform focused on driving outcomes for brand and performance advertisers across screens.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Pubmatic	Exact match	Redwood City, CA, United StatesHQ recorded Sep 21, 2026	501-1,000	1,297 contacts →
	Exact match “PubMatic is the leading AI-powered ad tech company delivering digital advertising performance.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Mediaocean	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,050 contacts →
	Exact match “Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Magnite	Exact match	United StatesHQ recorded Sep 21, 2026	501-1,000	910 contacts →
	Exact match “We’re Magnite (NASDAQ: MGNI), the world’s largest independent sell-side advertising company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Logical Position	Exact match	Lake Oswego, OR, United StatesHQ recorded Sep 21, 2026	501-1,000	899 contacts →
	Exact match “Logical Position (LP) is an Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	NP Digital	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	866 contacts →
	Exact match “Neil Patel has been recognized by the Wall Street Journal, Forbes, and the United Nations, to name a few, as one of the most influential and successful marketers and entrepreneurs…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Adform	Exact match	Copenhagen, DenmarkHQ recorded Sep 21, 2026	501-1,000	847 contacts →
	Exact match “Adform is the most powerful and safe media buying platform in the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	KARGO	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	843 contacts →
	Exact match “Kargo creates memorable experiences for advertisers that go beyond the first impression to captivate consumer attention.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Smartly	Exact match	Helsinki, FinlandHQ recorded Sep 21, 2026	501-1,000	827 contacts →
	Exact match “Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Interactive Avenues	Exact match	Mumbai, IndiaHQ recorded Sep 21, 2026	501-1,000	802 contacts →
	Exact match “Interactive Avenues is India’s leading full-service digital marketing company with offices in Mumbai (headquarters), Gurugram, Bengaluru, Chennai and Kolkata.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Equativ	Exact match	Paris, FranceHQ recorded Sep 21, 2026	501-1,000	705 contacts →
	Exact match “Equativ is a leading independent media platform that empowers advertisers and publishers to achieve real outcomes across the entire digital ecosystem.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Innovid	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	640 contacts →
	Exact match “Innovid is the leading independent ad tech platform, empowering marketers to create, deliver, measure, and optimize ad-supported experiences that people love.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Perion	Exact match	New York, United StatesHQ recorded Sep 21, 2026	501-1,000	621 contacts →
	Exact match “Perion is helping agencies, brands and retailers get better results with their marketing investments by providing advanced technology across all major digital channels.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	OGURY	Exact match	London, FranceHQ recorded Sep 21, 2026	501-1,000	595 contacts →
	Exact match “Ogury is a global adtech company powered by Persona Intelligence, its proprietary technology that enables brands and agencies to activate consistent persona-based strategies…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Precis	Exact match	Stockholm, SwedenHQ recorded Sep 21, 2026	201-500	535 contacts →
	Exact match “Precis is a modern, tech-powered digital marketing agency specialising in media buying, analytics, creative, and proprietary technology.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Tombras	Exact match	Knoxville, TN, United StatesHQ recorded Sep 21, 2026	201-500	496 contacts →
	Exact match “Tombras is a 450+ person, full-service agency with a digital mindset.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Quantcast	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	501-1,000	491 contacts →
	Exact match “Quantcast is the AI-powered ad platform built for performance marketers.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	M C Saatchi Performance	Exact match	London, United KingdomHQ recorded Sep 21, 2026	201-500	457 contacts →
	Exact match “We are a Global digital media agency specializing in taking a human approach to connecting brands with people across all channels.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Affinity Global	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	201-500	446 contacts →
	Exact match “Affinity is a leading global AdTech company, empowering publishers to maximize revenue and enabling advertisers to reach their ideal audiences.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	VERVE	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	436 contacts →
	Exact match “Verve is a global leading advertising technology company, connecting advertisers seeking to buy digital ad space with publishers monetizing their content.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Viant Technology	Exact match	Irvine, CA, United StatesHQ recorded Sep 21, 2026	201-500	418 contacts →
	Exact match “Viant Technology Inc.(NASDAQ: DSP) is a leader in AI-powered programmatic advertising, dedicated to driving innovation in digital marketing.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	BIG ADS	Exact match	Sydney, AustraliaHQ recorded Sep 21, 2026	n/a	409 contacts →
	Exact match “Big Ads has been providing digital ad-tech solutions for 3 years with great success thanks to the release of Buddy, an ad-tech platform which produces rich media creative tags to…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Triplelift	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	402 contacts →
	Exact match “TripleLift is the Creative SSP that transforms digital advertising through creative technology and innovative ad formats.” Recorded in the RevenueBase company graph · Sep 21, 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 “online display advertising companies”. 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 24,529 online display advertising companies worldwide

See the full list, filter by size, metro and specialty, and access 47,694 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Online display advertising companies worldwide at a glance

As of Sep 21, 2026

25.7%Verified-email coverage

7.6Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

16,045

11-50

6,757

51-200

1,257

201-500

287

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

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 online display advertising companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “online display advertising companies” 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 47,694 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 21, 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.

Online display advertising companies by location

105 lists · largest first

Every Online display 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 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 “online display advertising companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many online display advertising companies are there worldwide?

RevenueBase identified 24,529 company matches for online display advertising companies 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?

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

Which country has the most online display advertising companies?

The United States leads with 4,324 companies, followed by India (2,518) and Brazil (1,236). Every online display advertising companies list by country and city is linked on this page.

Which city has the most online display advertising companies?

London leads with 481 company records, followed by New York (314) and Sao Paulo (296).

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 47,694 professional contacts with verified work emails tracked across these 24,529 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 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 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.