Company lists · Data refreshed September 2026
Top 25 Online advertising law firms worldwide
RevenueBase identified 1,770 online advertising law firms worldwide as of September 2026 and tracks 9,462 professional contacts across them, including 2,837 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers online advertising law 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 29, 2026. Country and city lists for online advertising law 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.
The 25 largest online advertising law firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 242 contacts → | ||||
Partial evidence “We are a digital advertising agency specializing in Performance, Branding, Creativity and Consulting of CRO, Analytics and Google Ads.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 183 contacts → | ||||
Indirect evidence “Somos o parceiro estratégico em Direito Digital que transforma tendências em novas possibilidades, alavancando empresas em direção ao futuro e transformando realidades – das…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 148 contacts → | ||||
Partial evidence “Martindale-Avvo comprises the online legal brands Martindale-Hubbell, Martindale-Nolo, Ngage, Captorra, and Avvo, and connects attorneys with millions of prospective clients every…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 148 contacts → | ||||
Partial evidence “Located in the heart of downtown Nashville, cj Advertising is a full-service ad agency that exclusively serves personal injury brands.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 143 contacts → | ||||
Indirect evidence “Consumer Attorney Marketing Group (CAMG) is a full service Marketing Agency made up of experts in Direct Response Marketing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 138 contacts → | ||||
Partial evidence “With offices in Washington, DC, Denver, Colorado, and Austin, Texas, Wilkinson Barker Knauer (WBK) is the nation’s largest stand-alone communications and technology law firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 137 contacts → | ||||
Partial evidence “BluShark Digital LLC was founded on the principle of providing high quality online marketing solutions for companies struggling to stand out online.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 116 contacts → | ||||
Strong evidence “Most law firms invest in advertising, but struggle to connect the spend to revenue growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 115 contacts → | ||||
Strong evidence “Named to Fortune’s 50 Best Workplaces in Advertising & Marketing, Hennessey Digital is an award-winning digital marketing agency specializing in SEO for lawyers and other online…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 93 contacts → | ||||
Partial evidence “For over 20 years, PMP has been the trusted partner for consumer law firms, delivering innovative marketing and website management solutions that drive results.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 86 contacts → | ||||
Indirect evidence “Pixeltruth thrives on the power of trained, skilled manpower.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 85 contacts → | ||||
Partial evidence “Royal Comunicación es una empresa dedicada al Marketing online teniendo como fin principal optimizar y rentabilizar los recursos de las empresas en la red.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 84 contacts → | ||||
Partial evidence “USAttorneys.com is a full service online marketing firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 64 contacts → | ||||
Partial evidence “Whitehardt is a full-service broadcast and digital advertising agency specializing in mass tort and personal injury case acquisition.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 58 contacts → | ||||
Indirect evidence “Fidalgo Advogados nasceu da experiência que seus profissionais adquiriram durante anos, notadamente nas áreas de Comunicação, Entretenimento, Direito Autor.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 54 contacts → | ||||
Indirect evidence “Com 21 anos de atividade, O Peck Advogados foi fundado impulsionado pela tecnologia para modernizar todas as frentes do direito.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 54 contacts → | ||||
Strong evidence “At Conscious, we have over 20 years of experience in helping law firms become more successful online.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 52 contacts → | ||||
Indirect evidence “ORIXA MEDIA est une agence média Internet, fondée sur une expertise en Search Marketing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 49 contacts → | ||||
Partial evidence “Above the Bar Marketing offers comprehensive digital marketing services specifically tailored for law firms.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 47 contacts → | ||||
Indirect evidence “At Studio Legal, we understand the commercial pressures of pursuing creative endeavours, running a business and taking risks.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 45 contacts → | ||||
Partial evidence “is a digital marketing agency that focuses entirely on helping law firms grow through expert SEO, Website Design, Google PPC, Local Service Ads (LSA) & Social Media Services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 43 contacts → | ||||
Indirect evidence “Looking for a dedicated team to successfully run your AdWords campaigns and increase your revenue?” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 41 contacts → | ||||
Partial evidence “Wir leben Online Marketing und wir lieben Search!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 40 contacts → | ||||
Indirect evidence “O+Z is a dynamic litigation boutique founded by attorneys with extensive experience protecting content and brands.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 40 contacts → | ||||
Partial evidence “Elite Legal Marketing offers superior web design and digital marketing services for law firms and attorneys.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: online advertising law 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 online advertising law firms.
- Partial evidence
- Its own public description names part of online advertising law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name online advertising law 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 1,770 online advertising law firms worldwide
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Online advertising law firms worldwide at a glance
As of Sep 29, 2026Companies by employee count
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 online advertising law 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 online advertising law firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “online advertising law 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 online advertising law 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 online advertising law 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, 2,837 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 29, 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.
Online advertising law firms by location
15 lists · largest firstEvery Online advertising law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Online advertising law firms based in the United States473
- Online advertising law firms based in Brazil210
- Online advertising law firms based in Germany86
- Online advertising law firms based in Spain69
- Online advertising law firms based in the United Kingdom58
- Online advertising law firms based in France55
- Online advertising law firms based in India48
- Online advertising law firms based in Poland35
- Online advertising law firms based in Canada31
- Online advertising law firms based in the Netherlands31
- Online advertising law firms based in Italy29
- Online advertising law firms based in Australia26
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 online advertising law 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 online advertising law firms are there worldwide?
RevenueBase identified 1,770 online advertising law 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?
EPA Digital, headquartered in Ciudad De Mexico, tops this list with the largest team on record.
Which country has the most online advertising law firms?
The United States leads with 473 companies, followed by Brazil (210) and Germany (86). Every online advertising law firms list by country and city is linked on this page.
Which city has the most online advertising law firms?
Sao Paulo leads with 62 headquartered companies, followed by Paris (27) and New York (25).
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 2,837 verified decision-maker contacts tracked across these 1,770 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 29, 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.