Company lists · Data refreshed November 2026

Top 25 HR service providers worldwide

Name: HR service providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 105,124 companies tracked

RevenueBase identified 105,124 company matches for HR service providers worldwide as of November 2026 and tracks 2,047,894 professional contacts across them, including 331,820 with verified work emails. India is the largest market and Bangalore the largest hub.

This list covers company matches for HR service providers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for HR service providers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

105,124Companies

2,047,894Contacts tracked

331,820Verified emails

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The 25 largest HR service providers worldwide

Ranked by team size

Top 25 of 105,124 company matches for HR service providers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Adecco	Exact match	Zurich, SwitzerlandHQ recorded Nov 6, 2026	10001+	157,655 contacts →
	Exact match “Perfect placements.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	ADP	Exact match	Roseland, QC, United StatesHQ recorded Nov 6, 2026	10001+	89,840 contacts →
	Exact match “Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Manpowergroup	Exact match	Milwaukee, United StatesHQ recorded Nov 6, 2026	10001+	30,624 contacts →
	Exact match “ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Manpower	Exact match	Milwaukee, WI, United StatesHQ recorded Nov 6, 2026	10001+	26,152 contacts →
	Exact match “Manpower is the global leader in contingent and permanent recruitment workforce solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	The Adecco Group	Exact match	Zurich, SwitzerlandHQ recorded Nov 6, 2026	10001+	24,864 contacts →
	Exact match “The Adecco Group is a world leading talent company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Paychex	Exact match	Rochester, NY, United StatesHQ recorded Nov 6, 2026	10001+	18,792 contacts →
	Exact match “As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Insight Global	Exact match	Atlanta, FL, United StatesHQ recorded Nov 6, 2026	n/a	17,957 contacts →
	Exact match “Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Korn Ferry	Exact match	Los Angeles, United StatesHQ recorded Nov 6, 2026	10001+	14,835 contacts →
	Exact match “Korn Ferry is a global consulting firm that powers performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	LHH	Exact match	Jacksonville, TX, United StatesHQ recorded Nov 6, 2026	10001+	13,920 contacts →
	Exact match “At LHH, we believe work should be meaningful, fulfilling, and connected.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	GI Group	Exact match	Milan, United StatesHQ recorded Nov 6, 2026	1,001-5,000	13,289 contacts →
	Exact match “We are Gi Group, one of the world’s leading providers of operational workforce solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Express Employment International	Exact match	Oklahoma City, OK, United StatesHQ recorded Nov 6, 2026	10001+	12,387 contacts →
	Exact match “Founded in 1983 and corporately headquartered in Oklahoma City, Express Employment International supports the Express Employment Professionals franchise and related brands.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Randstad USA	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	9,496 contacts →
	Exact match “Randstad North America, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	City Of Chicago	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	10001+	7,872 contacts →
	Exact match “The City of Chicago is the third largest city in the United States, with a population of nearly three million people.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	AMS	Exact match	London, GermanyHQ recorded Nov 6, 2026	5,001-10,000	7,133 contacts →
	Exact match “AMS, a market-leading provider of talent acquisition and workforce solutions, is now part of Korn Ferry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Strada	Exact match	The Woodlands, TX, United StatesHQ recorded Nov 6, 2026	5,001-10,000	5,991 contacts →
	Exact match “With over 30 years as a global people, payroll, and technology leader, Strada specializes in removing complexity to simplify workforce management.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Eficacia	Exact match	Cali, ColombiaHQ recorded Nov 6, 2026	10001+	5,573 contacts →
	Exact match “Incrementamos la productividad y eficiencia de nuestros clientes- Más de 40 años de experiencia en el mercado- Líderes en Soluciones de Mercadeo, Trade Marketing, Ventas y Gestión…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Appleone Employment Services	Exact match	Glendale, AZ, United StatesHQ recorded Nov 6, 2026	1,001-5,000	5,438 contacts →
	Exact match “AppleOne Employment Services is a full-service employment company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Lancesoft, INC	Exact match	Herndon, United StatesHQ recorded Nov 6, 2026	5,001-10,000	5,326 contacts →
	Exact match “Established in LanceSoft is a pioneer in delivering top-notch Global Workforce Solutions and IT Services to a diverse clientele.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	VOLT	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	5,289 contacts →
	Exact match “Volt (an Innova Solutions affiliate) is a multi-award winning global workforce solutions provider that propels businesses and careers forward with expert momentum.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Insperity	Exact match	Kingwood, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,943 contacts →
	Exact match “Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Select Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	10001+	4,621 contacts →
	Exact match “Select Staffing is a leading provider of temporary staffing and employment services in the U.S, with nationwide operations across multiple contingent staffing sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Robert Walters	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	4,589 contacts →
	Exact match “Robert Walters is the world’s most trusted talent solutions business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	PSG Global Solutions	Exact match	Marina Del Rey, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,517 contacts →
	Exact match “PSG is a global leader in recruitment process optimization, delivering high-performance outsourced recruiting solutions that drive real business results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Trinet	Exact match	Dublin, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,432 contacts →
	Exact match “TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	GUSTO	Exact match	San Francisco, CO, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,083 contacts →
	Exact match “Gusto has been growing the small business economy with technology and heart for more than a decade.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “HR service providers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 105,124 HR service providers worldwide

See the full list, filter by size, metro and specialty, and access 331,820 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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HR service providers worldwide at a glance

As of Nov 6, 2026

16.2%Verified-email coverage

19.5Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Bangalore

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

62,045

11-50

26,522

51-200

9,161

201-500

3,304

501-1,000

1,464

1,001-5,000

1,434

5,001-10,000

319

10001+

366

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for HR service providers are linked below.
What qualifies: Company records worldwide whose business descriptions match “HR service providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 331,820 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

HR service providers by location

426 lists · largest first

Every HR service providers 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “HR service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many HR service providers are there worldwide?

RevenueBase identified 105,124 company matches for HR service providers worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Adecco tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most HR service providers?

India leads with 14,337 companies, followed by the United States (13,509) and Brazil (6,181). Every HR service providers list by country and city is linked on this page.

Which city has the most HR service providers?

Bangalore leads with 1549 company records, followed by Sao Paulo (1459) and London (1361).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 331,820 professional contacts with verified work emails tracked across these 105,124 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.