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Company lists · Data refreshed November 2026

Top 25 HR firms worldwide

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 100,997 companies tracked

RevenueBase identified 100,997 company matches for HR firms worldwide as of November 2026 and tracks 2,098,704 professional contacts across them, including 348,659 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for HR firms 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 firms 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
100,997Companies
2,098,704Contacts tracked
348,659Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest HR firms worldwide

Ranked by team size
Top 25 of 100,997 company matches for HR firms 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1
Adecco
Exact matchZurich, SwitzerlandHQ recorded Nov 6, 202610001+157,655 contacts →

Exact match

“Perfect placements.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2
ADP
Exact matchRoseland, QC, United StatesHQ recorded Nov 6, 202610001+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
Randstad
Exact matchDiemen, NetherlandsHQ recorded Nov 6, 202610001+34,655 contacts →

Exact match

“Randstad is the world’s largest talent company and a partner of choice to clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4
Manpowergroup
Exact matchMilwaukee, United StatesHQ recorded Nov 6, 202610001+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
5
Manpower
Exact matchMilwaukee, WI, United StatesHQ recorded Nov 6, 202610001+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
6
The Adecco Group
Exact matchZurich, SwitzerlandHQ recorded Nov 6, 202610001+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
7
HAYS
Exact matchLondon, United KingdomHQ recorded Nov 6, 20265,001-10,00024,348 contacts →

Exact match

“At Hays, we believe that the right job can transform a person's life - and the right person can transform a business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8
Workday
Exact matchPleasanton, United StatesHQ recorded Nov 6, 202610001+22,341 contacts →

Exact match

“By unifying HR and Finance on an open, trusted platform powered by AI, Workday delivers high-impact outcomes our customers can count on.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9
Paychex
Exact matchRochester, NY, United StatesHQ recorded Nov 6, 202610001+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
10
Insight Global
Exact matchAtlanta, FL, United StatesHQ recorded Nov 6, 2026n/a17,957 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
11
Korn Ferry
Exact matchLos Angeles, United StatesHQ recorded Nov 6, 202610001+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
12
LHH
Exact matchJacksonville, TX, United StatesHQ recorded Nov 6, 202610001+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
13
GI Group
Exact matchMilan, United StatesHQ recorded Nov 6, 20261,001-5,00013,289 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
14
Express Employment International
Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 202610001+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
15
Randstad USA
Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 20261,001-5,0009,496 contacts →

Exact match

“Randstad North America, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16
City Of Chicago
Exact matchChicago, IL, United StatesHQ recorded Nov 6, 202610001+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
17
AMS
Exact matchLondon, GermanyHQ recorded Nov 6, 20265,001-10,0007,133 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
18
Dayforce
Exact matchMinneapolis, United StatesHQ recorded Nov 6, 20265,001-10,0006,365 contacts →

Exact match

“Dayforce is as a global leader in HCM technology focused on improving work for thousands of customers and millions of employees around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19
Strada
Exact matchThe Woodlands, TX, United StatesHQ recorded Nov 6, 20265,001-10,0005,991 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
20
Vialto
Exact matchLondon, United KingdomHQ recorded Nov 6, 20265,001-10,0005,734 contacts →

Exact match

“Vialto is focused on transforming the global mobility ecosystem to support multinational organizations and their employees.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21
Fonction Publique
Exact matchLabege, FranceHQ recorded Nov 6, 2026n/a5,691 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22
Eficacia
Exact matchCali, ColombiaHQ recorded Nov 6, 202610001+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
23
Appleone Employment Services
Exact matchGlendale, AZ, United StatesHQ recorded Nov 6, 20261,001-5,0005,438 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
24
VOLT
Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 20261,001-5,0005,289 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
25
Insperity
Exact matchKingwood, TX, United StatesHQ recorded Nov 6, 20261,001-5,0004,943 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

Showing 25 of 100,997 HR firms worldwide

See the full list, filter by size, metro and specialty, and access 348,659 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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HR firms worldwide at a glance

As of Nov 6, 2026
16.6%Verified-email coverage
20.8Average contacts per company
1-10Median size (employees)
1.5%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
61,206
11-50
24,627
51-200
8,172
201-500
3,049
501-1,000
1,399
1,001-5,000
1,369
5,001-10,000
335
10001+
391

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 firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “HR firms” 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 348,659 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 firms by location

400 lists · largest first

Every HR firms 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 firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many HR firms are there worldwide?

RevenueBase identified 100,997 company matches for HR firms 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 firms?

The United States leads with 14,036 companies, followed by India (12,327) and Brazil (6,234). Every HR firms list by country and city is linked on this page.

Which city has the most HR firms?

Sao Paulo leads with 1522 company records, followed by Bangalore (1346) and London (1205).

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 348,659 professional contacts with verified work emails tracked across these 100,997 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.

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