Company lists · Data refreshed October 2026

Top 25 International staffing firms worldwide

Name: International staffing firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 37,855 companies tracked

RevenueBase identified 37,855 international staffing firms worldwide as of October 2026 and tracks 983,858 professional contacts across them, including 164,005 with verified work emails and 136,135 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers international staffing firms worldwide, 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 October 1, 2026. Country and city lists for international staffing firms follow the table.

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 Oct 1, 2026 86% judged on-target in blind review

37,855Companies

983,858Contacts tracked

164,005Verified emails

136,135Mobile numbers

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The 25 largest international staffing firms worldwide

Ranked by team size

Top 25 of 37,855 international staffing firms worldwide, ranked by team size, largest first. Data refreshed Oct 1, 2026. RevenueBase Smart Search rates how each company's information relates to international staffing 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	Adecco	Indirect evidence	Zurich, SwitzerlandHQ checked Oct 1, 2026	10001+	141,230 contacts →
	Indirect evidence “Perfect placements.” Source: RevenueBase Database · checked Oct 1, 2026
2	Robert Half	Indirect evidence	Menlo Park, CA, United StatesHQ checked Oct 1, 2026	10001+	25,574 contacts →
	Indirect evidence “At Robert Half, we prioritize your security-if you believe you've encountered a scam or fraudulent recruiter, please report it immediately to All Robert Half recruiters…” Source: RevenueBase Database · checked Oct 1, 2026
3	HAYS	Indirect evidence	London, United KingdomHQ checked Oct 1, 2026	5,001-10,000	22,731 contacts →
	Indirect evidence “At Hays, we believe that the right job can transform a person's life - and the right person can transform a business.” Source: RevenueBase Database · checked Oct 1, 2026
4	Insight Global	Partial evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	n/a	15,553 contacts →
	Partial evidence “Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Source: RevenueBase Database · checked Oct 1, 2026
5	Express Employment International	Partial evidence	Oklahoma City, OK, United StatesHQ checked Oct 1, 2026	10001+	12,647 contacts →
	Partial evidence “Founded in 1983 and corporately headquartered in Oklahoma City, Express Employment International supports the Express Employment Professionals franchise and related brands.” Source: RevenueBase Database · checked Oct 1, 2026
6	Randstad USA	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	1,001-5,000	8,522 contacts →
	Indirect evidence “Randstad North America, Inc.” Source: RevenueBase Database · checked Oct 1, 2026
7	Tradesmen International	Partial evidence	Macedonia, OH, United StatesHQ checked Oct 1, 2026	10001+	4,999 contacts →
	Partial evidence “Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.” Source: RevenueBase Database · checked Oct 1, 2026
8	Lancesoft, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Oct 1, 2026	5,001-10,000	4,877 contacts →
	Indirect evidence “Established in LanceSoft is a pioneer in delivering top-notch Global Workforce Solutions and IT Services to a diverse clientele.” Source: RevenueBase Database · checked Oct 1, 2026
9	VOLT	Indirect evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	1,001-5,000	4,831 contacts →
	Indirect evidence “Volt (an Innova Solutions affiliate) is a multi-award winning global workforce solutions provider that propels businesses and careers forward with expert momentum.” Source: RevenueBase Database · checked Oct 1, 2026
10	Appleone Employment Services	Indirect evidence	Glendale, CA, United StatesHQ checked Oct 1, 2026	1,001-5,000	4,627 contacts →
	Indirect evidence “AppleOne Employment Services is a full-service employment company.” Source: RevenueBase Database · checked Oct 1, 2026
11	Robert Walters	Indirect evidence	London, United KingdomHQ checked Oct 1, 2026	1,001-5,000	4,423 contacts →
	Indirect evidence “Robert Walters is the world’s most trusted talent solutions business.” Source: RevenueBase Database · checked Oct 1, 2026
12	Spherion	Partial evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	10001+	4,263 contacts →
	Partial evidence “We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Source: RevenueBase Database · checked Oct 1, 2026
13	Select Staffing	Partial evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	10001+	3,934 contacts →
	Partial evidence “Select Staffing is a leading provider of temporary staffing and employment services in the U.S, with nationwide operations across multiple contingent staffing sectors.” Source: RevenueBase Database · checked Oct 1, 2026
14	Artech L.L.C	Partial evidence	Morristown, NJ, United StatesHQ checked Oct 1, 2026	5,001-10,000	3,674 contacts →
	Partial evidence “Artech is the largest Women-Owned IT Staffing Firm in the U.S, with 34+ years of experience powering workforce transformation for Fortune 500 companies and public-sector…” Source: RevenueBase Database · checked Oct 1, 2026
15	Manpower France	Indirect evidence	Puteaux, FranceHQ checked Oct 1, 2026	1,001-5,000	3,619 contacts →
	Indirect evidence “Manpower France est une marque de ManpowerGroup France qui propose aux entreprises des solutions en matière de recrutement sous le label Conseil Recrutement et des solutions aux…” Source: RevenueBase Database · checked Oct 1, 2026
16	Elwood Staffing Services, INC	Indirect evidence	Columbus, IN, United StatesHQ checked Oct 1, 2026	n/a	3,481 contacts →
	Indirect evidence “Whether you're looking to find your next great employee, make your next career move, or help a friend find a new job, you can trust that Elwood puts its passion and expertise into…” Source: RevenueBase Database · checked Oct 1, 2026
17	Synergie France	Indirect evidence	Boulogne Billancourt, FranceHQ checked Oct 1, 2026	1,001-5,000	3,277 contacts →
	Indirect evidence “Le Groupe Synergie, Leader Français en services RH, vous accompagne dans l'évolution de votre carrière professionnelle : recrutement CDD-CDI, intérim, formation et conseil RH.” Source: RevenueBase Database · checked Oct 1, 2026
18	Prologistix	Partial evidence	Atlanta, GA, United StatesHQ checked Oct 1, 2026	n/a	3,253 contacts →
	Partial evidence “ProLogistix is the leading logistics staffing firm in the country.” Source: RevenueBase Database · checked Oct 1, 2026
19	Beacon Hill	Partial evidence	Boston, MA, United StatesHQ checked Oct 1, 2026	1,001-5,000	3,238 contacts →
	Partial evidence “Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Source: RevenueBase Database · checked Oct 1, 2026
20	Randstad Enterprise	Indirect evidence	Amsterdam, NetherlandsHQ checked Oct 1, 2026	5,001-10,000	3,223 contacts →
	Indirect evidence “Randstad Enterprise is the leading global talent solutions provider, enabling companies to create sustainable business value and agility by keeping people at the heart of their…” Source: RevenueBase Database · checked Oct 1, 2026
21	Randstad Italia	Indirect evidence	Milan, ItalyHQ checked Oct 1, 2026	1,001-5,000	3,105 contacts →
	Indirect evidence “Crediamo nelle connessioni reali.” Source: RevenueBase Database · checked Oct 1, 2026
22	Allegis Group	Indirect evidence	Hanover, MD, United StatesHQ checked Oct 1, 2026	10001+	3,103 contacts →
	Indirect evidence “As the global leader in talent solutions, we take pride in what we do, connecting great people to great opportunities, helping businesses win and careers soar.” Source: RevenueBase Database · checked Oct 1, 2026
23	Randstad España	Indirect evidence	Madrid, SpainHQ checked Oct 1, 2026	1,001-5,000	3,083 contacts →
	Indirect evidence “Randstad es la empresa líder en España en soluciones de Recursos Humanos, haciendo posible que cada día personas en nuestro país tengan un empleo.” Source: RevenueBase Database · checked Oct 1, 2026
24	NES Fircroft	Partial evidence	Altrincham, United KingdomHQ checked Oct 1, 2026	1,001-5,000	2,951 contacts →
	Partial evidence “With over 90 years’ combined experience of delivering workforce solutions to the global energy industry, NES Fircroft is proud to be the world’s leading engineering staffing…” Source: RevenueBase Database · checked Oct 1, 2026
25	Samsic Emploi	Indirect evidence	Rennes, FranceHQ checked Oct 1, 2026	5,001-10,000	2,454 contacts →
	Indirect evidence “Samsic Emploi a été classée meilleure enseigne de travail temporaire par Capital, pour la 4ème année consécutive.” Source: RevenueBase Database · checked Oct 1, 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: international staffing 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 international staffing firms.
Partial evidence: Its own public description names part of international staffing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international staffing 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 37,855 international staffing firms worldwide

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International staffing firms worldwide at a glance

As of Oct 1, 2026

16.7%Verified-email coverage

13.8%Mobile-number coverage

26.0Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · London

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

20,874

11-50

9,430

51-200

4,431

201-500

1,575

501-1,000

702

1,001-5,000

540

5,001-10,000

107

10001+

117

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 international staffing 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.
Coverage: 41 countries, largest first: the United States, the United Kingdom, Germany, France, Canada, the Netherlands, Australia, Brazil, South Africa, Poland and 31 more. Country and city lists for international staffing firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “international staffing 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 international staffing 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 international staffing firms, and records with no verified work email.
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, 164,005 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 October 1, 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.

International staffing firms by location

201 lists · largest first

Every International staffing 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 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 international staffing 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 international staffing firms are there worldwide?

RevenueBase identified 37,855 international staffing firms worldwide as of October 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?

Adecco, headquartered in Zurich, tops this list with the largest team on record.

Which country has the most international staffing firms?

The United States leads with 12,749 companies, followed by the United Kingdom (4,027) and Germany (2,552). Every international staffing firms list by country and city is linked on this page.

Which city has the most international staffing firms?

London leads with 1310 headquartered companies, followed by New York (634) and Paris (587).

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 164,005 verified decision-maker contacts tracked across these 37,855 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 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.