Company lists · Data refreshed September 2026

Top 25 Arbitration firms based in the United States

Name: Arbitration firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,053 companies tracked

RevenueBase identified 1,053 arbitration firms headquartered in the United States as of September 2026 and tracks 10,950 professional contacts across them, including 5,302 with verified work emails. New York is the largest hub.

This list covers arbitration firms headquartered in the 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 19, 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 19, 2026 86% judged on-target in blind review

1,053Companies

10,950Contacts tracked

5,302Verified emails

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The 25 largest arbitration firms based in the United States

Ranked by team size

Top 25 of 1,053 arbitration firms based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to arbitration 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	Quinn Emanuel	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,957 contacts →
	Strong 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 19, 2026
2	American Arbitration Association	Strong evidence	New York, NY, United StatesHQ checked Sep 19, 2026	501-1,000	1,147 contacts →
	Strong evidence “The American Arbitration Association® with its long history and experience in the field of alternative dispute resolution, provides services to individuals and organizations who…” Source: RevenueBase Database · checked Sep 19, 2026
3	JAMS	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 19, 2026	501-1,000	923 contacts →
	Indirect evidence “JAMS is the premier provider of alternative dispute resolution (ADR) services, handling more than cases annually.” Source: RevenueBase Database · checked Sep 19, 2026
4	Robins Kaplan LLP	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 19, 2026	501-1,000	519 contacts →
	Indirect evidence “Robins Kaplan LLP is among the nation’s premier trial law firms, with more than 200 attorneys in Bismarck, N.D; Boston; Los Angeles; Minneapolis; New York; Silicon Valley; and…” Source: RevenueBase Database · checked Sep 19, 2026
5	ADR Services, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	n/a	216 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
6	Institute For Transnational Arbitration	Strong evidence	Plano, TX, United StatesHQ checked Sep 19, 2026	n/a	211 contacts →
	Strong evidence “Founded in 1986, the Institute for Transnational Arbitration (ITA) has become an important international educational forum in the field of transnational arbitration, counting…” Source: RevenueBase Database · checked Sep 19, 2026
7	Arbitration Forums, INC	Strong evidence	Tampa, FL, United StatesHQ checked Sep 19, 2026	51-200	208 contacts →
	Strong evidence “Founded by the insurance industry in 1943, Arbitration Forums (AF) is a membership-driven, not-for-profit organization that exists to effectively and efficiently serve its over…” Source: RevenueBase Database · checked Sep 19, 2026
8	Judicate West	Indirect evidence	Santa Ana, CA, United StatesHQ checked Sep 19, 2026	51-200	166 contacts →
	Indirect evidence “For more than 30 years, Judicate West has been one of California’s leading providers of private dispute resolution services with a distinguished roster of proven neutrals…” Source: RevenueBase Database · checked Sep 19, 2026
9	Nicolaides Fink Thorpe Michaelides Sullivan LLP	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	138 contacts →
	Indirect evidence “Nicolaides Fink Thorpe Michaelides Sullivan LLP is dedicated to serving the insurance industry throughout the world in evaluating and resolving their most complex risks.” Source: RevenueBase Database · checked Sep 19, 2026
10	Signature Resolution	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	51-200	137 contacts →
	Indirect evidence “Signature Resolution is setting a higher standard in alternative dispute resolution.” Source: RevenueBase Database · checked Sep 19, 2026
11	Miles Mediation & Arbitration	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	51-200	123 contacts →
	Strong evidence “Miles Mediation & Arbitration is an award-winning alternative dispute resolution (ADR) provider.” Source: RevenueBase Database · checked Sep 19, 2026
12	Parr Brown GEE & Loveless	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 19, 2026	51-200	120 contacts →
	Indirect evidence “Parr Brown Gee & Loveless is a leading law firm located in Salt Lake City, Utah.” Source: RevenueBase Database · checked Sep 19, 2026
13	NAM National Arbitration And Mediation	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	116 contacts →
	Indirect evidence “NAM is a full-service provider of Alternative Dispute Resolution (ADR) services – supporting clients throughout the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
14	Porter Scott	Indirect evidence	Sacramento, CA, United StatesHQ checked Sep 19, 2026	51-200	111 contacts →
	Indirect evidence “For nearly five decades, our seasoned trial attorneys have represented clients across a broad spectrum of civil litigation matters, with experience spanning from state courts to…” Source: RevenueBase Database · checked Sep 19, 2026
15	Fletcher, Farley, Shipman & Salinas LLP	Strong evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	51-200	96 contacts →
	Strong evidence “The Texas law firm of Fletcher Farley offers experienced business defense in civil litigation and in the resolution of disputes through arbitration, mediation and negotiation.” Source: RevenueBase Database · checked Sep 19, 2026
16	Cooper & Scully, P.C	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	51-200	93 contacts →
	Indirect evidence “Cooper & Scully.” Source: RevenueBase Database · checked Sep 19, 2026
17	CPR Institute- International Institute For Conflict Prevention & Resolution	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	11-50	83 contacts →
	Indirect evidence “Established in 1977, the International Institute of Conflict Prevention and Resolution (CPR) is an independent nonprofit organization that helps prevent and resolve legal conflict…” Source: RevenueBase Database · checked Sep 19, 2026
18	Upchurch Watson White & MAX Mediation Group	Strong evidence	Ormond Beach, FL, United StatesHQ checked Sep 19, 2026	11-50	73 contacts →
	Strong evidence “Offering neutral services including mediation, arbitration and special master assignments to clients throughout Florida, Alabama and beyond.” Source: RevenueBase Database · checked Sep 19, 2026
19	Downey & Lenkov LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	68 contacts →
	Indirect evidence “Downey & Lenkov LLC was founded in 2001 by professionals from large Chicago law firms who are committed to providing world-class service but prefer a mid-sized firm setting.” Source: RevenueBase Database · checked Sep 19, 2026
20	Hart Wagner LLP	Strong evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	51-200	67 contacts →
	Strong evidence “In this era of mediation and arbitration, experienced trial attorneys are becoming increasingly rare.” Source: RevenueBase Database · checked Sep 19, 2026
21	Landau And Associates, P.A	Indirect evidence	Sunrise, FL, United StatesHQ checked Sep 19, 2026	51-200	65 contacts →
	Indirect evidence “A law firm that is dedicated to providing the best service and communication to our clients while fighting to get them the justice they deserve.” Source: RevenueBase Database · checked Sep 19, 2026
22	Lewis Baach Kaufmann Middlemiss Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	64 contacts →
	Indirect evidence “Lewis Baach Kaufmann Middlemiss is a premier international firm with extensive practices in insurance, reinsurance, international financial disputes and global commercial…” Source: RevenueBase Database · checked Sep 19, 2026
23	ADR Systems	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	59 contacts →
	Indirect evidence “Clients come to ADR Systems for the best in dispute resolution services.” Source: RevenueBase Database · checked Sep 19, 2026
24	FORUM	Indirect evidence	St. Louis Park State, United StatesHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “Forum delivers on the promise of alternative dispute resolution.” Source: RevenueBase Database · checked Sep 19, 2026
25	Resolute Systems, LLC	Strong evidence	Milwaukee, WI, United StatesHQ checked Sep 19, 2026	11-50	53 contacts →
	Strong evidence “Resolute provides mediation, arbitration, ADR training, and Consulting services to its clients throughout the United States, Canada, and Puerto Rico.” Source: RevenueBase Database · checked Sep 19, 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: arbitration 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 arbitration firms.
Partial evidence: Its own public description names part of arbitration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name arbitration 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 1,053 arbitration firms based in the United States

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Arbitration firms based in the United States at a glance

As of Sep 19, 2026

48.4%Verified-email coverage

10.4Average contacts per company

1-10Median size (employees)

6.5%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

848

11-50

159

51-200

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,053 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 arbitration 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 the United States whose own description of what they do matches “arbitration 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 arbitration 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 arbitration firms, and records with no verified work email. Companies headquartered outside United States 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, 5,302 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 19, 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.

Arbitration firms by metro

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 arbitration 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 arbitration firms are there based in the United States?

RevenueBase identified 1,053 arbitration firms headquartered in the 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?

Quinn Emanuel, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most arbitration firms?

New York leads with 68 headquartered companies, followed by Los Angeles (44) and Atlanta (39).

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 5,302 verified decision-maker contacts tracked across these 1,053 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 19, 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.