Company lists · Data refreshed August 2026
Top 25 Class action law firms based in Brazil
RevenueBase identified 249 class action law firms headquartered in Brazil as of August 2026 and tracks 2,588 professional contacts across them, including 401 with verified work emails and 30 with mobile numbers. Sao Paulo is the largest hub.
This list covers class action law firms headquartered in Brazil, 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 August 31, 2026.
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 class action law firms based in Brazil
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 524 contacts → | ||||
Indirect evidence “O escritório Mascarenhas Barbosa & Advogados Associados, criado no ano de é uma evolução do escritório jurídico inaugurado pelo advogado Gualter Mascarenhas Barbosa em 1968, ao…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 2 | 227 contacts → | ||||
Indirect evidence “Com mais de 40 anos de história, a Perez de Rezende Advogados se posiciona como uma empresa dinâmica, eficiente e que preza pela qualidade em seus serviços, tendo conquistado o…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 3 | 91 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 4 | 66 contacts → | ||||
Indirect evidence “Atuando no meio jurídico desde o ano de 1996, nossa missão é buscar, através de uma advocacia ágil quanto ao tempo de tramitação dos processos, os melhores resultados financeiros…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 5 | 56 contacts → | ||||
Indirect evidence “Advocacia para empresas, especializada no Contencioso de massa.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 6 | 43 contacts → | ||||
Indirect evidence “Somos um escritório de advocacia contenciosa corporativa especializado em gestão jurídica, prevenção, redução de passivo e recuperação de créditos.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 7 | 32 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 8 | 32 contacts → | ||||
Indirect evidence “Montezuma e Conde é um escritório de advocacia full service com sede em Brasília/DF.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 9 | 31 contacts → | ||||
Indirect evidence “Desde sua fundação em 2011, o escritório de advocacia consolidou-se como referência em Direito do Consumidor.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 10 | 28 contacts → | ||||
Indirect evidence “Facilitamos a vida dos consumidores que precisam de justiça.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 11 | 28 contacts → | ||||
Indirect evidence “Somos especialistas na luta pela reparação digna de vítimas em mais de 20 setores da economia - de acidentes aéreos a erros médicos.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 12 | 24 contacts → | ||||
Partial evidence “Wanderley Monteiro Rocha - ADC Advogados is a traditional law firm in Recife/PE (BR) which has a varied and nation-wide line of work.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 13 | 22 contacts → | ||||
Indirect evidence “Escritório especializado na resolução de conflitos complexos de natureza civil e empresarial.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 14 | 20 contacts → | ||||
Indirect evidence “Nós, do escritório Miranda & Araújo Advocacia, somos especializados em direito trabalhista e dedicados à defesa dos direitos dos trabalhadores.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 15 | 16 contacts → | ||||
Indirect evidence “Fundado no ano de 2009, pelos sócios Gabriel Guimarães de ANDRADE, Rafael ANTUNES Frederico e Leandro HENRIQUES Gonçalves, o AAH nasceu dedicado a prestar serviços jurídicos com…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 16 | 15 contacts → | ||||
Indirect evidence “Fundado em 18 de março de 1996, o Tucci Advogados Associados é fruto de uma longa gestação, que teve início com a atuação particular do Professor Rogério Launa Tucci, à frente de…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 17 | 14 contacts → | ||||
Indirect evidence “A sociedade Agrifoglio Vianna Advogados Associados, constituída em 1991, desenvolve a prática de seus serviços jurídicos de forma sólida em âmbito nacional.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 18 | 14 contacts → | ||||
Indirect evidence “LORIA E KALANSKY ADVOGADOS é um escritório de advocacia com atuação em CVM, Litígios Societários e Recuperação Internacional de Ativos.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 19 | 12 contacts → | ||||
Indirect evidence “O Escritório Marcio Rosa Sociedade de Advogados possui ampla infraestrutura, em dois endereços, e equipe altamente preparada para atender casos de violação do direito do…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 contacts → | ||||
Indirect evidence “Somos uma tradicional sociedade de advogados, constituída desde 1980, que se diferencia pelo atendimento personalizado e especialmente dedicado ao cliente e às suas demandas, e…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 contacts → | ||||
Indirect evidence “Santos e Bueno Advogados é um escritório de advocacia especializado na representação de pessoas físicas e/ou jurídicas em litígios de diversas naturezas.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 contacts → | ||||
Indirect evidence “Fundada em 2013, ainda sob denominação social W&F Advocacia, passando no ano de 2015 a ostentar a tríade BWF, o escritório ganhou destaque com o vultoso número de êxitos e…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 contacts → | ||||
Indirect evidence “Atuando há 50 anos no contencioso cível, nosso escritório foi fundado por Delson Petroni Junior, sendo que nesses anos sempre contou com o auxílio de profissionais competentes e…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 contacts → | ||||
Indirect evidence “Escritório de advocacia com ênfase em Direito Empresarial, Consumidor e Direito Trabalhista.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 contacts → | ||||
Indirect evidence “O escritório Flávio Salles Advogados iniciou suas atividades em 1967 e vem prestando serviços advocatícios a pessoas jurídicas e físicas.” Source: RevenueBase Database · checked Aug 31, 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: class action 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 class action law firms.
- Partial evidence
- Its own public description names part of class action law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name class action 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 249 class action law firms based in Brazil
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Class action law firms based in Brazil at a glance
As of Aug 31, 2026Companies by employee count
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 class action 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.
- What qualifies
- Companies headquartered in Brazil whose own description of what they do matches “class action 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 class action 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 class action law firms, and records with no verified work email. Companies headquartered outside Brazil are excluded even when they keep an office there.
- 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, 401 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 August 31, 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.
Class action law firms by metro
- Class action law firms in Sao Paulo55
- Class action law firms in Rio De Janeiro27
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 class action 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 class action law firms are there based in Brazil?
RevenueBase identified 249 class action law firms headquartered in Brazil as of August 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?
Mascarenhas Barbosa Advogados, headquartered in Cuiaba, tops this list with the largest team on record.
Which city has the most class action law firms?
Sao Paulo leads with 55 headquartered companies, followed by Rio De Janeiro (27) and Belo Horizonte (13).
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 401 verified decision-maker contacts tracked across these 249 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.
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