Company lists · Data refreshed September 2026

Top 25 Global HR consulting firms based in the United States

Name: Global HR consulting 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 30, 2026 11,761 companies tracked

RevenueBase identified 11,761 global HR consulting firms headquartered in the United States as of September 2026 and tracks 422,236 professional contacts across them, including 144,578 with verified work emails and 103,816 with mobile numbers. New York is the largest hub.

This list covers global HR consulting 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 30, 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 30, 2026 86% judged on-target in blind review

11,761Companies

422,236Contacts tracked

144,578Verified emails

103,816Mobile numbers

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The 25 largest global HR consulting firms based in the United States

Ranked by team size

Top 25 of 11,761 global HR consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to global HR consulting 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	ADP	Indirect evidence	Roseland, NJ, United StatesHQ checked Sep 30, 2026	10001+	84,166 contacts →
	Indirect evidence “Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Source: RevenueBase Database · checked Sep 30, 2026
2	Boston Consulting Group BCG	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	10001+	38,730 contacts →
	Partial evidence “Boston Consulting Group partners with leaders in business and society to tackle their most important challenges and capture their greatest opportunities.” Source: RevenueBase Database · checked Sep 30, 2026
3	Manpowergroup	Partial evidence	Milwaukee, WI, United StatesHQ checked Sep 30, 2026	10001+	27,063 contacts →
	Partial evidence “ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing and…” Source: RevenueBase Database · checked Sep 30, 2026
4	Bain & Company	Partial evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	10001+	21,689 contacts →
	Partial evidence “Bain & Company is a global consultancy that helps the world’s most ambitious change makers define the future.” Source: RevenueBase Database · checked Sep 30, 2026
5	Cbre Global Workplace Solutions GWS	Partial evidence	Dallas, TX, United StatesHQ checked Sep 30, 2026	10001+	17,726 contacts →
	Partial evidence “From short-term decisions to developing a long-term strategy, CBRE Global Workplace Solutions (GWS) partners with clients to uncover solutions for unique, organizational needs and…” Source: RevenueBase Database · checked Sep 30, 2026
6	Insight Global	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 30, 2026	n/a	15,553 contacts →
	Strong evidence “Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Source: RevenueBase Database · checked Sep 30, 2026
7	Korn Ferry	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 30, 2026	10001+	13,486 contacts →
	Strong evidence “Korn Ferry is a global consulting firm that powers performance.” Source: RevenueBase Database · checked Sep 30, 2026
8	LHH	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 30, 2026	10001+	12,889 contacts →
	Indirect evidence “At LHH, we believe work should be meaningful, fulfilling, and connected.” Source: RevenueBase Database · checked Sep 30, 2026
9	Protiviti	Strong evidence	Menlo Park, CA, United StatesHQ checked Sep 30, 2026	5,001-10,000	8,779 contacts →
	Strong evidence “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Source: RevenueBase Database · checked Sep 30, 2026
10	Randstad USA	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 30, 2026	1,001-5,000	8,522 contacts →
	Indirect evidence “Randstad North America, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
11	Oliver Wyman	Indirect evidence	New York, NY, United StatesHQ checked Sep 30, 2026	5,001-10,000	8,230 contacts →
	Indirect evidence “At Oliver Wyman, a Marsh business, we bring deep industry insight, bold innovation, and a collaborative approach that cuts through complexity to help organizations navigate their…” Source: RevenueBase Database · checked Sep 30, 2026
12	HURON	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	5,001-10,000	7,520 contacts →
	Partial evidence “Huron is a global professional services firm that collaborates with organizations to solve complex challenges and achieve ambitious goals.” Source: RevenueBase Database · checked Sep 30, 2026
13	Kearney	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	5,001-10,000	6,978 contacts →
	Partial evidence “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Source: RevenueBase Database · checked Sep 30, 2026
14	L.E.K. Consulting	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	1,001-5,000	4,093 contacts →
	Indirect evidence “L.E.K.” Source: RevenueBase Database · checked Sep 30, 2026
15	Heidrick & Struggles	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	1,001-5,000	3,376 contacts →
	Partial evidence “Heidrick & Struggles is the premier provider of executive search, corporate culture and leadership consulting services.” Source: RevenueBase Database · checked Sep 30, 2026
16	ETEAM	Partial evidence	Somerset, NJ, United StatesHQ checked Sep 30, 2026	n/a	3,285 contacts →
	Partial evidence “For over 25 years, eTeam has been trusted by global organizations to lead high-stakes programs where execution matters as much as strategy.” Source: RevenueBase Database · checked Sep 30, 2026
17	Spencer Stuart	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,889 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
18	Allegis Global Solutions	Partial evidence	Hanover, MD, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,866 contacts →
	Partial evidence “At Allegis Global Solutions (AGS), we’re in the human enterprise business.” Source: RevenueBase Database · checked Sep 30, 2026
19	Aston Carter	Partial evidence	Hanover, MD, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,437 contacts →
	Partial evidence “Aston Carter provides world-class corporate talent solutions to thousands of clients across the globe.” Source: RevenueBase Database · checked Sep 30, 2026
20	Frost & Sullivan	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,330 contacts →
	Indirect evidence “For over six decades, Frost & Sullivan has helped the world’s top companies toward transformational growth journeys that result in a stream of innovative growth opportunities.” Source: RevenueBase Database · checked Sep 30, 2026
21	Right Management	Partial evidence	Milwaukee, WI, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,326 contacts →
	Partial evidence “Right Management is our global talent management offering for outplacement, career management and leader development solutions.” Source: RevenueBase Database · checked Sep 30, 2026
22	The Judge Group	Partial evidence	Wayne, PA, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,202 contacts →
	Partial evidence “The Judge Group is an international leader in business technology consulting, talent solutions, and learning and development.” Source: RevenueBase Database · checked Sep 30, 2026
23	TENEO	Partial evidence	New York, NY, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,930 contacts →
	Partial evidence “Teneo is the global CEO advisory firm.” Source: RevenueBase Database · checked Sep 30, 2026
24	Manpowergroup Talent Solutions	Partial evidence	Milwaukee, WI, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,570 contacts →
	Partial evidence “Talent Solutions combines our leading global offerings RPO, TAPFIN-MSP and Right Management to provide end-to-end, data-driven capabilities across the talent lifecycle.” Source: RevenueBase Database · checked Sep 30, 2026
25	DDI Development Dimensions International	Indirect evidence	Bridgeville, PA, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,540 contacts →
	Indirect evidence “At DDI, we believe a better future starts with better leaders.” Source: RevenueBase Database · checked Sep 30, 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: global HR consulting 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 global HR consulting firms.
Partial evidence: Its own public description names part of global HR consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name global HR consulting 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 11,761 global HR consulting firms based in the United States

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Global HR consulting firms based in the United States at a glance

As of Sep 30, 2026

34.2%Verified-email coverage

24.6%Mobile-number coverage

35.9Average contacts per company

1-10Median size (employees)

5.7%Largest-city concentration · New York

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

8,703

11-50

2,097

51-200

628

201-500

145

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 32.0d

43,3150–30

94,82131–60

6,37861–90

20490–180

2,153180+

Company record updated

Median 89.0d

00–30

79,11131–60

142,05961–90

188,19990–180

31,517180+

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 global HR consulting 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 “global HR consulting 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 global HR consulting 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 global HR consulting 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, 144,578 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 30, 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.

Global HR consulting 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 global HR consulting 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 global HR consulting firms are there based in the United States?

RevenueBase identified 11,761 global HR consulting 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?

ADP, headquartered in Roseland, tops this list with the largest team on record.

Which city has the most global HR consulting firms?

New York leads with 666 headquartered companies, followed by Atlanta (335) and Chicago (303).

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 144,578 verified decision-maker contacts tracked across these 11,761 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 30, 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.