Company lists · Data refreshed September 2026

Top 25 Competition law firms worldwide

Name: Competition law firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 6,279 companies tracked

RevenueBase identified 6,279 competition law firms worldwide as of September 2026 and tracks 76,927 professional contacts across them, including 29,701 with verified work emails. Brazil is the largest market and Paris the largest hub.

This list covers competition 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 27, 2026. Country and city lists for competition 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

6,279Companies

76,927Contacts tracked

29,701Verified emails

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The 25 largest competition law firms worldwide

Ranked by team size

Top 25 of 6,279 competition law firms worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to competition law firms: 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	Slaughter And MAY	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,951 contacts →
	Partial evidence “Slaughter and May is regarded as one of the most prestigious law firms in the world.” Source: RevenueBase Database · checked Sep 27, 2026
2	Tozzinifreire Advogados	Partial evidence	São Paulo, BrazilHQ checked Sep 27, 2026	1,001-5,000	1,580 contacts →
	Partial evidence “TozziniFreire is one of the leading legal services organizations in Latin America, operating in all areas of Business Law and with a significant track record in serving national…” Source: RevenueBase Database · checked Sep 27, 2026
3	Shardul Amarchand Mangaldas & CO	Partial evidence	Chennai, IndiaHQ checked Sep 27, 2026	1,001-5,000	1,513 contacts →
	Partial evidence “Shardul Amarchand Mangaldas & Co.(SAM), founded on a century of legal achievements, is one of India’s leading full-service law firms with the ISO/IEC 27001:2022 certification -…” Source: RevenueBase Database · checked Sep 27, 2026
4	Gilbert Tobin	Indirect evidence	Barangaroo, AustraliaHQ checked Sep 27, 2026	1,001-5,000	1,162 contacts →
	Indirect evidence “Gilbert + Tobin was founded on values of excellence, trust, respect, integrity and good corporate citizenship.” Source: RevenueBase Database · checked Sep 27, 2026
5	GIDE	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	501-1,000	1,098 contacts →
	Partial evidence “Gide is a leading law firm, both in France and internationally, in all areas of business law for Litigation, Transactions, and Regulation.” Source: RevenueBase Database · checked Sep 27, 2026
6	Brownstein Hyatt Farber Schreck	Partial evidence	Denver, CO, United StatesHQ checked Sep 27, 2026	501-1,000	902 contacts →
	Partial evidence “For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.” Source: RevenueBase Database · checked Sep 27, 2026
7	Herzog	Partial evidence	Tel Aviv, IsraelHQ checked Sep 27, 2026	501-1,000	749 contacts →
	Partial evidence “Herzog Fox & Neeman is Israel’s largest law firm and has earned a reputation as market leader, evidenced by consistent top-tier rankings in both international and Israeli legal…” Source: RevenueBase Database · checked Sep 27, 2026
8	BCF	Partial evidence	Montréal, QC, CanadaHQ checked Sep 27, 2026	501-1,000	725 contacts →
	Partial evidence “With over 500 employees and 300 professionals, BCF Business Law is the go-to firm for business leaders, growing companies, and well-established global enterprises who have chosen…” Source: RevenueBase Database · checked Sep 27, 2026
9	Lefosse	Partial evidence	São Paulo, BrazilHQ checked Sep 27, 2026	501-1,000	720 contacts →
	Partial evidence “We are an independent law firm that offers specialized advice and superior technical quality in a variety of legal areas.” Source: RevenueBase Database · checked Sep 27, 2026
10	Marval O'farrell, Mairal	Indirect evidence	Ciudad De Buenos Aires, ArgentinaHQ checked Sep 27, 2026	501-1,000	688 contacts →
	Indirect evidence “Fundada en 1923, Marval O’Farrell Mairal es la firma legal más grande de la Argentina, líder en el país y también en Latinoamérica.” Source: RevenueBase Database · checked Sep 27, 2026
11	VINGE	Partial evidence	Stockholm, SwedenHQ checked Sep 27, 2026	501-1,000	681 contacts →
	Partial evidence “We are a leading Nordic full-service law firm, with 580 expert employees and offices in Stockholm, Gothenburg, Malmo and Brussels.” Source: RevenueBase Database · checked Sep 27, 2026
12	Aird & Berlis LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	501-1,000	586 contacts →
	Indirect evidence “Whether you are conducting business in Canada or abroad, Aird & Berlis LLP understands the realities of your work.” Source: RevenueBase Database · checked Sep 27, 2026
13	Wiley Rein LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	501-1,000	576 contacts →
	Indirect evidence “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Source: RevenueBase Database · checked Sep 27, 2026
14	Roschier	Partial evidence	Helsinki, FinlandHQ checked Sep 27, 2026	501-1,000	566 contacts →
	Partial evidence “Roschier is one of the leading law firms in the Nordic region with offices in Helsinki and Stockholm.” Source: RevenueBase Database · checked Sep 27, 2026
15	Bech-Bruun	Partial evidence	Copenhagen, DenmarkHQ checked Sep 27, 2026	501-1,000	563 contacts →
	Partial evidence “Bech-Bruun is a market-oriented and highly specialised law firm providing advice in all areas of commercial law.” Source: RevenueBase Database · checked Sep 27, 2026
16	Lavery	Partial evidence	Montréal, QC, CanadaHQ checked Sep 27, 2026	201-500	546 contacts →
	Partial evidence “Over a century of legal advice to domestic and international organizations has made Lavery Lawyers the leading independent law firm in Quebec (Canadian Lawyer).” Source: RevenueBase Database · checked Sep 27, 2026
17	Werksmans Attorneys	Partial evidence	Johannesburg, South AfricaHQ checked Sep 27, 2026	201-500	528 contacts →
	Partial evidence “Established in the early 1900s, Werksmans Attorneys is a leading South African corporate and commercial law firm serving multinationals, listed companies, financial institutions…” Source: RevenueBase Database · checked Sep 27, 2026
18	Marcelo Tostes Advogados	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 27, 2026	201-500	518 contacts →
	Indirect evidence “Fundado em o Marcelo Tostes Advogados firmou-se como um escritório de advocacia empresarial de excelência.” Source: RevenueBase Database · checked Sep 27, 2026
19	Kellerhals Carrard	Indirect evidence	Basel, SwitzerlandHQ checked Sep 27, 2026	201-500	465 contacts →
	Indirect evidence “With 300 professionals (comprised of partners, salaried lawyers, legal experts, tax advisers and notaries) and a total of more than 500 staff, Kellerhals Carrard is the largest…” Source: RevenueBase Database · checked Sep 27, 2026
20	VWV	Indirect evidence	Bristol, United KingdomHQ checked Sep 27, 2026	201-500	436 contacts →
	Indirect evidence “Clients are at the heart of everything we do.” Source: RevenueBase Database · checked Sep 27, 2026
21	Mcdonald Hopkins LLC	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 27, 2026	201-500	402 contacts →
	Partial evidence “McDonald Hopkins is an entrepreneurial law firm founded in 1930 on practical Midwestern business values that are as relevant today as when we first began.” Source: RevenueBase Database · checked Sep 27, 2026
22	DS Avocats	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	201-500	380 contacts →
	Indirect evidence “Since 1972, the DS Group has been committed to supporting businesses, both private and public, through strategic counsel and litigation.” Source: RevenueBase Database · checked Sep 27, 2026
23	Oxera Consulting LLP	Partial evidence	Brussels, BelgiumHQ checked Sep 27, 2026	201-500	362 contacts →
	Partial evidence “We advise companies, policymakers, regulators and lawyers on any economic issue connected with competition, finance or regulation.” Source: RevenueBase Database · checked Sep 27, 2026
24	BÄR & Karrer	Partial evidence	Zurich, SwitzerlandHQ checked Sep 27, 2026	201-500	345 contacts →
	Partial evidence “Bär & Karrer is a leading Swiss law firm with more than 200 lawyers in Zurich, Geneva, Lugano, Zug, Basel and St.” Source: RevenueBase Database · checked Sep 27, 2026
25	RBB Economics	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	343 contacts →
	Strong evidence “RBB Economics provides independent, expert economic advice on all aspects of competition law.” Source: RevenueBase Database · checked Sep 27, 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: competition 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 competition law firms.
Partial evidence: Its own public description names part of competition law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name competition 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 6,279 competition law firms worldwide

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Competition law firms worldwide at a glance

As of Sep 27, 2026

38.6%Verified-email coverage

12.3Average contacts per company

1-10Median size (employees)

5.0%Largest-city concentration · Paris

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

4,046

11-50

1,839

51-200

275

201-500

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 competition 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 competition law firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “competition 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 competition 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 competition 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, 29,701 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 27, 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.

Competition law firms by location

43 lists · largest first

Every Competition law firms 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 competition 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 competition law firms are there worldwide?

RevenueBase identified 6,279 competition 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?

Slaughter And MAY, headquartered in London, tops this list with the largest team on record.

Which country has the most competition law firms?

Brazil leads with 1,011 companies, followed by France (566) and Germany (441). Every competition law firms list by country and city is linked on this page.

Which city has the most competition law firms?

Paris leads with 317 headquartered companies, followed by Sao Paulo (284) and Madrid (150).

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 29,701 verified decision-maker contacts tracked across these 6,279 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 27, 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.