Company lists · Data refreshed November 2026

Top 25 Project-based staffing agencies worldwide

Name: Project-based staffing agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 42,251 companies tracked

RevenueBase identified 42,251 company matches for project-based staffing agencies worldwide as of November 2026 and tracks 1,512,240 professional contacts across them, including 200,500 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for project-based staffing agencies 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 5, 2026. Country and city lists for project-based staffing agencies 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 5, 2026 How this list was built

42,251Companies

1,512,240Contacts tracked

200,500Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest project-based staffing agencies worldwide

Ranked by team size

Top 25 of 42,251 company matches for project-based staffing agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 5, 2026	10001+	157,655 contacts →
	Exact match “Perfect placements.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Randstad	Exact match	Diemen, NetherlandsHQ recorded Nov 5, 2026	10001+	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 5, 2026 · View company records in RevenueBase
3	KELLY	Exact match	Troy, MI, United StatesHQ recorded Nov 5, 2026	10001+	33,061 contacts →
	Exact match “We’ve been helping organizations find the people they need longer than any other company in the world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Manpowergroup	Exact match	Milwaukee, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
5	Robert Half	Exact match	Menlo Park, CA, United StatesHQ recorded Nov 5, 2026	10001+	28,157 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Manpower	Exact match	Milwaukee, WI, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
7	HAYS	Exact match	London, United KingdomHQ recorded Nov 5, 2026	5,001-10,000	24,348 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 5, 2026 · View company records in RevenueBase
8	Aerotek	Exact match	Hanover, FL, United StatesHQ recorded Nov 5, 2026	n/a	20,401 contacts →
	Exact match “From economic headwinds to talent complexities, the challenges facing North American industry are real.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Insight Global	Exact match	Atlanta, FL, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
10	GI Group	Exact match	Milan, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
11	Express Employment International	Exact match	Oklahoma City, OK, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
12	Randstad USA	Exact match	Atlanta, GA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	9,496 contacts →
	Exact match “Randstad North America, Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Staffmark	Exact match	Cincinnati, OH, United StatesHQ recorded Nov 5, 2026	1,001-5,000	8,615 contacts →
	Exact match “It’s time to join a company that truly cares and works hard to do better for you.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Kforce INC	Exact match	Tampa, FL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	6,741 contacts →
	Exact match “Kforce is a solutions firm specializing in technology, finance and accounting, and professional staffing services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	REED	Exact match	London, United KingdomHQ recorded Nov 5, 2026	1,001-5,000	6,261 contacts →
	Exact match “Reed is the largest family-run recruitment business in the world and we’ve been improving lives through work since 1960.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Peopleready	Exact match	Tacoma, WA, United StatesHQ recorded Nov 5, 2026	10001+	5,580 contacts →
	Exact match “Want to be part of an award-winning team that is reimagining the way people connect with work?” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Appleone Employment Services	Exact match	Glendale, AZ, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
18	Lancesoft, INC	Exact match	Herndon, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
19	VOLT	Exact match	Atlanta, GA, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
20	Tradesmen International	Exact match	Macedonia, OH, United StatesHQ recorded Nov 5, 2026	10001+	5,254 contacts →
	Exact match “Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Cloudstaff	Exact match	Sydney, AustraliaHQ recorded Nov 5, 2026	5,001-10,000	4,840 contacts →
	Exact match “We are Cloudstaff, the remote staffing pioneer that combines ethical outsourcing with enterprise-grade people tech.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Spherion	Exact match	Atlanta, GA, United StatesHQ recorded Nov 5, 2026	10001+	4,751 contacts →
	Exact match “We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Select Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
24	Robert Walters	Exact match	London, United KingdomHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
25	Artech L.L.C	Exact match	Morristown, CA, United StatesHQ recorded Nov 5, 2026	5,001-10,000	3,973 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 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 “project-based staffing agencies”. 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 42,251 project-based staffing agencies worldwide

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Project-based staffing agencies worldwide at a glance

As of Nov 5, 2026

13.3%Verified-email coverage

35.8Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

17,896

11-50

12,169

51-200

6,728

201-500

2,577

501-1,000

1,173

1,001-5,000

964

5,001-10,000

192

10001+

250

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 project-based staffing agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “project-based staffing agencies” 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 200,500 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 5, 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.

Project-based staffing agencies by location

209 lists · largest first

Every Project-based staffing agencies 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 “project-based staffing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many project-based staffing agencies are there worldwide?

RevenueBase identified 42,251 company matches for project-based staffing agencies 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 project-based staffing agencies?

The United States leads with 13,457 companies, followed by India (4,272) and the United Kingdom (2,951). Every project-based staffing agencies list by country and city is linked on this page.

Which city has the most project-based staffing agencies?

London leads with 804 company records, followed by New York (494) and Bangalore (448).

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 200,500 professional contacts with verified work emails tracked across these 42,251 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 5, 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.