Company lists · Data refreshed September 2026

Top 25 Merger acquisition law firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 18,371 companies tracked

RevenueBase identified 18,371 merger acquisition law firms worldwide as of September 2026 and tracks 278,473 professional contacts across them, including 112,347 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers merger acquisition 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 28, 2026. Country and city lists for merger acquisition 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 28, 2026 86% judged on-target in blind review

18,371Companies

278,473Contacts tracked

112,347Verified emails

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The 25 largest merger acquisition law firms worldwide

Ranked by team size

Top 25 of 18,371 merger acquisition law firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to merger acquisition 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	Skadden, Arps, Slate, Meagher & Flom LLP And Affiliates	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	4,540 contacts →
	Indirect evidence “Skadden, Arps, Slate, Meagher & Flom LLP and Affiliates delivers the highest quality advice and novel solutions to legal challenges, enabling clients to achieve their business…” Source: RevenueBase Database · checked Sep 28, 2026
2	Cooley LLP	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,341 contacts →
	Indirect evidence “Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.” Source: RevenueBase Database · checked Sep 28, 2026
3	Allen & Overy	Partial evidence	Global, United KingdomHQ checked Sep 28, 2026	1,001-5,000	2,738 contacts →
	Partial evidence “On May 1, 2024, Allen & Overy and Shearman & Sterling merged to become A&O Shearman.” Source: RevenueBase Database · checked Sep 28, 2026
4	Morrison Foerster	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,667 contacts →
	Indirect evidence “Morrison Foerster transforms complexity into advantage.” Source: RevenueBase Database · checked Sep 28, 2026
5	Arnold & Porter	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,333 contacts →
	Indirect evidence “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: RevenueBase Database · checked Sep 28, 2026
6	Seyfarth Shaw LLP	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,167 contacts →
	Indirect evidence “High stakes.” Source: RevenueBase Database · checked Sep 28, 2026
7	Dechert LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,041 contacts →
	Partial evidence “Dechert is the law firm that helps business leaders lead.” Source: RevenueBase Database · checked Sep 28, 2026
8	Slaughter And MAY	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
9	Pillsbury Winthrop Shaw Pittman LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,949 contacts →
	Partial evidence “Pillsbury is one of the world’s foremost law firms, operating at the intersection of technology innovation, capital and government.” Source: RevenueBase Database · checked Sep 28, 2026
10	Trilegal	Partial evidence	Mumbai, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,926 contacts →
	Partial evidence “Trilegal is a leading full-service law firm in India with over 25 years of experience, known for its depth of expertise and client-focused approach.” Source: RevenueBase Database · checked Sep 28, 2026
11	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,790 contacts →
	Partial evidence “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Source: RevenueBase Database · checked Sep 28, 2026
12	Cyril Amarchand Mangaldas	Partial evidence	Mumbai, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,756 contacts →
	Partial evidence “Cyril Amarchand Mangaldas (CAM) is India’s leading law firm with a global reputation of being trusted advisers to its clients.” Source: RevenueBase Database · checked Sep 28, 2026
13	Vinson & Elkins	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,693 contacts →
	Partial evidence “Vinson & Elkins is a law firm of global distinction, working with leading companies on wide-ranging matters in key industries across the economy.” Source: RevenueBase Database · checked Sep 28, 2026
14	Ballard Spahr LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,682 contacts →
	Partial evidence “Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Source: RevenueBase Database · checked Sep 28, 2026
15	Dorsey & Whitney LLP	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,599 contacts →
	Partial evidence “Clients have relied on the international law firm of Dorsey & Whitney LLP since 1912 as a trusted legal advisor and valued business partner.” Source: RevenueBase Database · checked Sep 28, 2026
16	Fried Frank	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	1,584 contacts →
	Indirect evidence “Fried, Frank, Harris, Shriver & Jacobson LLP advises the world's leading corporations, investment funds and financial institutions on their most critical legal needs and business…” Source: RevenueBase Database · checked Sep 28, 2026
17	Tozzinifreire Advogados	Partial evidence	São Paulo, BrazilHQ checked Sep 28, 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 28, 2026
18	Haynes And Boone, LLP	Partial evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,558 contacts →
	Partial evidence “Haynes Boone is among the fastest-growing firms in the Am Law 100, providing full-service counsel across sectors, including corporate, energy, financial services, real estate…” Source: RevenueBase Database · checked Sep 28, 2026
19	Shardul Amarchand Mangaldas & CO	Partial evidence	Chennai, IndiaHQ checked Sep 28, 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 28, 2026
20	Corrs Chambers Westgarth	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 2026	1,001-5,000	1,506 contacts →
	Partial evidence “Corrs Chambers Westgarth is Australia’s leading independent law firm.” Source: RevenueBase Database · checked Sep 28, 2026
21	Clark Hill LAW	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,343 contacts →
	Indirect evidence “At Clark Hill, our value proposition is simple.” Source: RevenueBase Database · checked Sep 28, 2026
22	Quarles & Brady LLP	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,318 contacts →
	Indirect evidence “For over 125 years, Quarles & Brady LLP has provided quality legal services to a wide range of industries on a national stage.” Source: RevenueBase Database · checked Sep 28, 2026
23	Hill Dickinson LLP	Partial evidence	Liverpool, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,231 contacts →
	Partial evidence “An unpredictable world calls for a progressive-thinking law firm that’s aligned to your ambitions.” Source: RevenueBase Database · checked Sep 28, 2026
24	Snell & Wilmer	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	501-1,000	1,219 contacts →
	Partial evidence “Founded in 1938, Snell & Wilmer is a full-service business law firm with more than 500 lawyers practicing in 17 locations throughout the United States and in Mexico.” Source: RevenueBase Database · checked Sep 28, 2026
25	Hinshaw & Culbertson LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	501-1,000	1,188 contacts →
	Partial evidence “Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Source: RevenueBase Database · checked Sep 28, 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: merger acquisition 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 merger acquisition law firms.
Partial evidence: Its own public description names part of merger acquisition law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name merger acquisition 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 18,371 merger acquisition law firms worldwide

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Merger acquisition law firms worldwide at a glance

As of Sep 28, 2026

40.3%Verified-email coverage

15.2Average contacts per company

1-10Median size (employees)

4.0%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11,468

11-50

5,529

51-200

957

201-500

217

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 merger acquisition 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 merger acquisition law firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “merger acquisition 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 merger acquisition 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 merger acquisition 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, 112,347 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 28, 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.

Merger acquisition law firms by location

148 lists · largest first

Every Merger acquisition 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 merger acquisition 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 merger acquisition law firms are there worldwide?

RevenueBase identified 18,371 merger acquisition 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?

Skadden, Arps, Slate, Meagher & Flom LLP And Affiliates, headquartered in New York, tops this list with the largest team on record.

Which country has the most merger acquisition law firms?

Brazil leads with 2,489 companies, followed by the United States (2,465) and India (1,351). Every merger acquisition law firms list by country and city is linked on this page.

Which city has the most merger acquisition law firms?

Sao Paulo leads with 742 headquartered companies, followed by Paris (392) and New Delhi (333).

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 112,347 verified decision-maker contacts tracked across these 18,371 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 28, 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.