Company lists · Data refreshed September 2026

Top 25 Big 5 law firms based in Boston, United States

Name: Big 5 law firms based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 208 companies tracked

RevenueBase identified 208 big 5 law firms headquartered in Boston, United States as of September 2026 and tracks 17,311 professional contacts across them, including 10,354 with verified work emails. Across the United States, New York is the largest hub for this category (1,021 companies); Boston has 208.

This list covers big 5 law firms headquartered in Boston, United States, 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 23, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 23, 2026 86% judged on-target in blind review

208Companies

17,311Contacts tracked

10,354Verified emails

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The 25 largest big 5 law firms based in Boston, United States

Ranked by team size

Top 25 of 208 big 5 law firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to big 5 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	Goodwin	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	5,001-10,000	3,582 contacts →
	Indirect evidence “At Goodwin, we live your business.” Source: RevenueBase Database · checked Sep 23, 2026
2	Nixon Peabody LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,776 contacts →
	Partial evidence “Nixon Peabody LLP is an American Lawyer top-100 law firm in the United States and has 15 offices worldwide.” Source: RevenueBase Database · checked Sep 23, 2026
3	MINTZ	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,326 contacts →
	Partial evidence “Mintz is a full-service law firm serving clients in the life sciences, energy, private equity, and technology industries.” Source: RevenueBase Database · checked Sep 23, 2026
4	Fish & Richardson P.C	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,167 contacts →
	Partial evidence “As the leading intellectual property law firm, we help innovators change the world through our unmatched litigation, prosecution, and post-grant experience across venues and…” Source: RevenueBase Database · checked Sep 23, 2026
5	Foley Hoag LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	501-1,000	787 contacts →
	Partial evidence “Foley Hoag is an award-winning, mid-sized, international law firm that focuses on innovative industries and high-stakes litigation.” Source: RevenueBase Database · checked Sep 23, 2026
6	Bingham Mccutchen LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	1,001-5,000	575 contacts →
	Indirect evidence “Paul, Weiss, Rifkind, Wharton & Garrison LLP is a firm of about lawyers with diverse backgrounds, personalities, ideas and interests who provide innovative and effective solutions…” Source: RevenueBase Database · checked Sep 23, 2026
7	Choate, Hall & Stewart LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	572 contacts →
	Partial evidence “Choate, one of the nation’s premier law firms, is different from the vast majority of major firms in ways we believe materially benefit our clients.” Source: RevenueBase Database · checked Sep 23, 2026
8	MG M The LAW Firm	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	514 contacts →
	Indirect evidence “MG+M is a national litigation firm with deep expertise in a wide range of practice areas.” Source: RevenueBase Database · checked Sep 23, 2026
9	Goulston & Storrs	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	496 contacts →
	Indirect evidence “Collaboration is not just a pillar of our strategy; it is the key to our competitive advantage and approach to clients, community, and each other.” Source: RevenueBase Database · checked Sep 23, 2026
10	Wolf Greenfield	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	428 contacts →
	Indirect evidence “Wolf, Greenfield & Sacks, P.C.” Source: RevenueBase Database · checked Sep 23, 2026
11	Morrison Mahoney LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	398 contacts →
	Indirect evidence “For 75 years, Morrison Mahoney LLP has been committed to servicing its clients' needs and working with its clients to achieve desired goals and objectives.” Source: RevenueBase Database · checked Sep 23, 2026
12	Hinckley Allen	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	385 contacts →
	Partial evidence “Hinckley Allen is a full-service business law firm dedicated to delivering exceptional results for its clients.” Source: RevenueBase Database · checked Sep 23, 2026
13	Nutter	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	364 contacts →
	Indirect evidence “Welcome to Nutter, where legal expertise meets unparalleled dedication.” Source: RevenueBase Database · checked Sep 23, 2026
14	Sullivan & Worcester LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	359 contacts →
	Partial evidence “As an international law firm with innovation in our DNA, we attract clients that are visionaries, trailblazers and game changers.” Source: RevenueBase Database · checked Sep 23, 2026
15	Verrill	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	286 contacts →
	Indirect evidence “Decency, honesty, and judgment.” Source: RevenueBase Database · checked Sep 23, 2026
16	Burns & Levinson LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	201-500	254 contacts →
	Partial evidence “Burns & Levinson is a full-service, Boston-based law firm, with more than 125 attorneys in Massachusetts and Rhode Island.” Source: RevenueBase Database · checked Sep 23, 2026
17	Eapd Edwards Angell Palmer & Dodge LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	1,001-5,000	247 contacts →
	Indirect evidence “On October 1, 2011, Edwards Wildman Palmer LLP was formed as a result of a merger between Edwards Angell Palmer & Dodge LLP and Wildman, Harrold, Allen & Dixon LLP.” Source: RevenueBase Database · checked Sep 23, 2026
18	Prince Lobel TYE LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	51-200	223 contacts →
	Partial evidence “Prince Lobel Tye LLP, one of Boston’s leading law firms, has a demonstrated record of delivering successful outcomes for our clients and helping them to achieve their business…” Source: RevenueBase Database · checked Sep 23, 2026
19	Riemer & Braunstein LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	51-200	174 contacts →
	Indirect evidence “Riemer & Braunstein is a unique and dynamic firm in today’s legal marketplace.” Source: RevenueBase Database · checked Sep 23, 2026
20	Hemenway & Barnes LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	51-200	140 contacts →
	Indirect evidence “Based in Boston, Hemenway & Barnes LLP has served for more than 160 years as trusted counsel to the region’s high net worth families, businesses, and nonprofit organizations.” Source: RevenueBase Database · checked Sep 23, 2026
21	Boyle Shaughnessy LAW	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	51-200	137 contacts →
	Partial evidence “Recognized as one of the region's most experienced, reliable and persistent litigation firms, Boyle \| Shaughnessy Law builds confidence with each client by achieving winning…” Source: RevenueBase Database · checked Sep 23, 2026
22	Casner & Edwards, LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	51-200	104 contacts →
	Indirect evidence “The Casner & Edwards Difference In today’s increasingly complex legal environment, companies, organizations and individuals look to Casner & Edwards for attorneys who provide both…” Source: RevenueBase Database · checked Sep 23, 2026
23	Clark Elbing LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	51-200	104 contacts →
	Partial evidence “Clark+Elbing is a top-tier intellectual property (IP) law firm focused on protecting and promoting innovations in life science, chemistry, devices, and diagnostics.” Source: RevenueBase Database · checked Sep 23, 2026
24	Hamilton, Brook, Smith & Reynolds, P.C	Partial evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	51-200	100 contacts →
	Partial evidence “Hamilton Brook Smith Reynolds is a leading law firm specializing in intellectual property law.” Source: RevenueBase Database · checked Sep 23, 2026
25	Cetrulo LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	51-200	100 contacts →
	Indirect evidence “For over 25 years, our dedicated attorneys have been setting the standard for exceptional representation in liability defense litigation.” Source: RevenueBase Database · checked Sep 23, 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: big 5 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 big 5 law firms.
Partial evidence: Its own public description names part of big 5 law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big 5 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 208 big 5 law firms based in Boston, United States

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Big 5 law firms based in Boston, United States at a glance

As of Sep 23, 2026

59.8%Verified-email coverage

83.2Average contacts per company

1-10Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

111

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 208 companies.

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 big 5 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 Boston, United States whose own description of what they do matches “big 5 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 big 5 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 big 5 law firms, and records with no verified work email. Companies headquartered outside Boston 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, 10,354 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 23, 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.

Big 5 law firms by metro in the United States

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 big 5 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 big 5 law firms are there based in Boston, United States?

RevenueBase identified 208 big 5 law firms headquartered in Boston, United States 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?

Goodwin, headquartered in Boston, tops this list with the largest team on record.

Which city in the United States has the most big 5 law firms?

New York leads the United States with 1,021 headquartered companies, followed by Chicago (492) and Los Angeles (477). Boston has 208.

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 10,354 verified decision-maker contacts tracked across these 208 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 23, 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.