Company lists · Data refreshed September 2026

Top 25 Big six law firms based in Los Angeles, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 340 companies tracked

RevenueBase identified 340 big six law firms headquartered in Los Angeles, United States as of September 2026 and tracks 25,568 professional contacts across them, including 15,990 with verified work emails. Across the United States, New York is the largest hub for this category (668 companies); Los Angeles has 340.

This list covers big six law firms headquartered in Los Angeles, 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

340Companies

25,568Contacts tracked

15,990Verified emails

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The 25 largest big six law firms based in Los Angeles, United States

Ranked by team size

Top 25 of 340 big six law firms based in Los Angeles, 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 six 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	Gibson Dunn	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,735 contacts →
	Partial evidence “Gibson Dunn is a leading global law firm, advising clients on significant transactions and disputes.” Source: RevenueBase Database · checked Sep 23, 2026
2	Lewis Brisbois	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,079 contacts →
	Partial evidence “Established in 1979, Lewis Brisbois Bisgaard & Smith LLP is a national, full-service law firm with more than 1,600 attorneys and 54 offices in 30 states and the District of…” Source: RevenueBase Database · checked Sep 23, 2026
3	Paul Hastings	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,045 contacts →
	Indirect evidence “With widely recognized elite teams in finance, mergers & acquisitions, private equity, restructuring and special situations, litigation, employment and real estate, Paul Hastings…” Source: RevenueBase Database · checked Sep 23, 2026
4	Quinn Emanuel	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,957 contacts →
	Indirect evidence “Quinn Emanuel Urquhart & Sullivan LLP is a 1300+ lawyer business litigation firm-the largest in the world devoted solely to business litigation and arbitration.” Source: RevenueBase Database · checked Sep 23, 2026
5	Manatt, Phelps & Phillips, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	501-1,000	1,085 contacts →
	Indirect evidence “Forget everything you thought you knew about professional services firms.” Source: RevenueBase Database · checked Sep 23, 2026
6	Buchalter	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	501-1,000	843 contacts →
	Partial evidence “Buchalter is a full-service business law firm with offices in Arizona, California, Colorado, Georgia, Illinois, Oregon, Tennessee, Utah, and Washington.” Source: RevenueBase Database · checked Sep 23, 2026
7	Wood, Smith, Henning & Berman LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	501-1,000	781 contacts →
	Indirect evidence “Wood, Smith, Henning & Berman offers world-class representation for clients ranging from individuals to Fortune 500 corporations, with an emphasis on small to middle market firms.” Source: RevenueBase Database · checked Sep 23, 2026
8	Allen Matkins	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	527 contacts →
	Partial evidence “Allen Matkins, a law firm with over 285 attorneys, was founded with deep roots in real estate and has leveraged that foundation to grow and build prominent litigation, corporate…” Source: RevenueBase Database · checked Sep 23, 2026
9	Munger, Tolles & Olson LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	521 contacts →
	Indirect evidence “Munger, Tolles & Olson is a 200-lawyer firm based in Los Angeles with a national practice representing clients in a broad range of complex and high-profile matters.” Source: RevenueBase Database · checked Sep 23, 2026
10	Nossaman LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	332 contacts →
	Partial evidence “Nossaman LLP is a national law firm with attorneys and policy advisors located in 12 offices throughout the United States.” Source: RevenueBase Database · checked Sep 23, 2026
11	Burke, Williams & Sorensen, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	296 contacts →
	Indirect evidence “For nearly 100 years, Burke, Williams & Sorensen, LLP has served public agencies and private business entities across California.” Source: RevenueBase Database · checked Sep 23, 2026
12	Manning Kass	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	282 contacts →
	Partial evidence “Founded in 1994 with just 16 attorneys and two practice areas, Manning Kass is today a top-tier full-service national law firm with more than 170 Attorneys, 8 offices, and 35…” Source: RevenueBase Database · checked Sep 23, 2026
13	Cox, Castle & Nicholson LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	270 contacts →
	Indirect evidence “Cox, Castle & Nicholson LLP was founded in Los Angeles in 1968, with the goal of providing superior and comprehensive legal services to businesses, institutions, and individuals…” Source: RevenueBase Database · checked Sep 23, 2026
14	Jeffer Mangels Butler & Mitchell LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	258 contacts →
	Partial evidence “Jeffer Mangels Butler & Mitchell LLP (JMBM) is a full service law firm of approximately 120 lawyers.” Source: RevenueBase Database · checked Sep 23, 2026
15	Irell & Manella LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	258 contacts →
	Partial evidence “Irell & Manella LLP is a law firm focused on complex commercial and IP litigation.” Source: RevenueBase Database · checked Sep 23, 2026
16	Mitchell Silberberg & Knupp LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	255 contacts →
	Indirect evidence “Since 1908, MSK has displayed an ability to understand the complex, demystify the mysterious, and define the unknown.” Source: RevenueBase Database · checked Sep 23, 2026
17	Greenberg Glusker LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	211 contacts →
	Partial evidence “Greenberg Glusker is a full-service law firm serving the needs of businesses, organizations, and individuals globally for over 65 years.” Source: RevenueBase Database · checked Sep 23, 2026
18	Musick, Peeler & Garrett	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	204 contacts →
	Partial evidence “Musick Peeler, a premier law firm with over 80 attorneys across five offices in major commercial centers of California, exemplifies excellence in legal service.” Source: RevenueBase Database · checked Sep 23, 2026
19	Glaser Weil	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	51-200	172 contacts →
	Partial evidence “Glaser Weil is a premier law firm headquartered in Los Angeles with outstanding experience and market-leading successes in litigation, corporate, intellectual property and real…” Source: RevenueBase Database · checked Sep 23, 2026
20	Sheppard	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	1,001-5,000	165 contacts →
	Indirect evidence “Businesses turn to Sheppard to deliver sophisticated counsel to help clients move ahead.” Source: RevenueBase Database · checked Sep 23, 2026
21	Michelman Robinson	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	51-200	158 contacts →
	Indirect evidence “At Michelman Robinson, strategy isn’t a step in the process-it’s the starting point.” Source: RevenueBase Database · checked Sep 23, 2026
22	Haight Brown & Bonesteel	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	51-200	157 contacts →
	Indirect evidence “From civil litigation to business transactions, Haight Brown & Bonesteel LLP provides practical and effective resolution advice to the most perplexing disputes, ranging from early…” Source: RevenueBase Database · checked Sep 23, 2026
23	Raines Feldman Littrell LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	51-200	148 contacts →
	Partial evidence “RAINES is a full-service business law firm, built for what’s next.” Source: RevenueBase Database · checked Sep 23, 2026
24	Murchison & Cumming, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	201-500	137 contacts →
	Indirect evidence “Murchison & Cumming, LLP is a California and Nevada civil litigation firm.” Source: RevenueBase Database · checked Sep 23, 2026
25	Selman Leichenger Edson HSU Newman & Moore LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	51-200	134 contacts →
	Partial evidence “Selman Leichenger Edson Hsu Newman Moore LLP is a law firm that serves the insurance industry nationwide, from its offices in Los Angeles, San Francisco, San Diego, and the…” 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 six 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 six law firms.
Partial evidence: Its own public description names part of big six 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 six 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 340 big six law firms based in Los Angeles, United States

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Big six law firms based in Los Angeles, United States at a glance

As of Sep 23, 2026

62.5%Verified-email coverage

75.2Average contacts per company

11-50Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

164

11-50

113

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Los Angeles, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 340 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 six 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 Los Angeles, United States whose own description of what they do matches “big six 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 six 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 six law firms, and records with no verified work email. Companies headquartered outside Los Angeles 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, 15,990 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 six 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 six 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 six law firms are there based in Los Angeles, United States?

RevenueBase identified 340 big six law firms headquartered in Los Angeles, 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?

Gibson Dunn, headquartered in Los Angeles, tops this list with the largest team on record.

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

New York leads the United States with 668 headquartered companies, followed by Chicago (344) and Los Angeles (340).

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 15,990 verified decision-maker contacts tracked across these 340 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.