Company lists · Data refreshed September 2026

Top 25 Advertising staffing firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 49,512 companies tracked

RevenueBase identified 49,512 advertising staffing firms worldwide as of September 2026 and tracks 904,310 professional contacts across them, including 131,644 with verified work emails. The United States is the largest market and London the largest hub.

This list covers advertising 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 September 27, 2026. Country and city lists for advertising 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 Sep 27, 2026 86% judged on-target in blind review

49,512Companies

904,310Contacts tracked

131,644Verified emails

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The 25 largest advertising staffing firms worldwide

Ranked by team size

Top 25 of 49,512 advertising staffing firms worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to advertising 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 Sep 27, 2026	10001+	141,230 contacts →
	Indirect evidence “Perfect placements.” Source: RevenueBase Database · checked Sep 27, 2026
2	Robert Half	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 27, 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 Sep 27, 2026
3	HAYS	Indirect evidence	London, United KingdomHQ checked Sep 27, 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 Sep 27, 2026
4	Michael Page	Indirect evidence	Addlestone, FranceHQ checked Sep 27, 2026	5,001-10,000	9,475 contacts →
	Indirect evidence “Welcome to the Michael Page global company profile.” Source: RevenueBase Database · checked Sep 27, 2026
5	Appleone Employment Services	Indirect evidence	Glendale, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	4,627 contacts →
	Indirect evidence “AppleOne Employment Services is a full-service employment company.” Source: RevenueBase Database · checked Sep 27, 2026
6	Robert Walters	Indirect evidence	London, United KingdomHQ checked Sep 27, 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 Sep 27, 2026
7	Spherion	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 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 Sep 27, 2026
8	Manpower France	Indirect evidence	Puteaux, FranceHQ checked Sep 27, 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 Sep 27, 2026
9	Thompson	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	5,001-10,000	3,574 contacts →
	Indirect evidence “J.” Source: RevenueBase Database · checked Sep 27, 2026
10	Beacon Hill	Partial evidence	Boston, MA, United StatesHQ checked Sep 27, 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 Sep 27, 2026
11	Randstad India	Indirect evidence	Chennai, IndiaHQ checked Sep 27, 2026	1,001-5,000	3,145 contacts →
	Indirect evidence “Randstad is the world’s largest talent company and a partner of choice to clients.” Source: RevenueBase Database · checked Sep 27, 2026
12	JAC Recruitment	Indirect evidence	Chiyoda-ku, JapanHQ checked Sep 27, 2026	1,001-5,000	3,098 contacts →
	Indirect evidence “With a legacy of over 50 years, we are not just a recruitment consultancy; we are the bridge that connects businesses with exceptional talent, fostering growth and innovation…” Source: RevenueBase Database · checked Sep 27, 2026
13	GREY	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	5,001-10,000	2,648 contacts →
	Indirect evidence “Grey’s mission is to create Famously Effective ideas that move people, business, and the world forward-harnessing the power of creativity to solve business problems and deliver…” Source: RevenueBase Database · checked Sep 27, 2026
14	24 Seven Talent	Indirect evidence	NY, United StatesHQ checked Sep 27, 2026	n/a	2,554 contacts →
	Indirect evidence “24 Seven partners with companies to get marketing, creative, and digital work done by providing the right talent, innovation, and insights.” Source: RevenueBase Database · checked Sep 27, 2026
15	Blue Arrow	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	n/a	2,341 contacts →
	Partial evidence “Blue Arrow is the UK’s Best-Known Staffing Agency, placing tens of thousands of candidates into temporary and permanent jobs for employers in the transport, logistics, call…” Source: RevenueBase Database · checked Sep 27, 2026
16	Pagegroup	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	5,001-10,000	2,071 contacts →
	Indirect evidence “Michael Page, Page Personnel, Page Executive and Page Outsourcing are all part of PageGroup.” Source: RevenueBase Database · checked Sep 27, 2026
17	Rose International	Partial evidence	Chesterfield, MO, United StatesHQ checked Sep 27, 2026	5,001-10,000	2,061 contacts →
	Partial evidence “Rose International is a leading provider of Staffing and Total Talent Solutions to corporations and government agencies, employing thousands of people across the U.S, Canada and…” Source: RevenueBase Database · checked Sep 27, 2026
18	Start People	Indirect evidence	Almere, NetherlandsHQ checked Sep 27, 2026	1,001-5,000	2,027 contacts →
	Indirect evidence “Al meer dan vijfendertig jaar verbindt Start People mens en werk.” Source: RevenueBase Database · checked Sep 27, 2026
19	RAS Intérim	Indirect evidence	Lyon, FranceHQ checked Sep 27, 2026	501-1,000	2,001 contacts →
	Indirect evidence “Créée en 1969, R.A.S Intérim est depuis 1994 une entreprise unique en France puisqu’elle offre une prestation de service disponible 7 J/ 7, 24 H/ 24 et sans interruption.” Source: RevenueBase Database · checked Sep 27, 2026
20	Remedy Intelligent Staffing	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	10001+	1,948 contacts →
	Partial evidence “Remedy Intelligent Staffing is a nationwide professional staffing organization with more than 50 years of recruiting and selection expertise to match job candidates with positions…” Source: RevenueBase Database · checked Sep 27, 2026
21	Avance Consulting	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	1,927 contacts →
	Indirect evidence “Avance Consulting is a global organization focused on delivering innovative talent solution services to some of the most renowned companies in the world, across industries that…” Source: RevenueBase Database · checked Sep 27, 2026
22	CPL	Indirect evidence	Dublin 4, IrelandHQ checked Sep 27, 2026	10001+	1,841 contacts →
	Indirect evidence “Cpl is a global provider of talent solutions to startup companies, multinationals, and SMEs in every sector from Pharmaceuticals to Fund Accounting.” Source: RevenueBase Database · checked Sep 27, 2026
23	Addison Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,840 contacts →
	Indirect evidence “Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Source: RevenueBase Database · checked Sep 27, 2026
24	Informal	Indirect evidence	GreeceHQ checked Sep 27, 2026	5,001-10,000	1,802 contacts →
	Indirect evidence “informal is a company based out of Greece.” Source: RevenueBase Database · checked Sep 27, 2026
25	YACHT	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 27, 2026	1,001-5,000	1,791 contacts →
	Indirect evidence “Yacht is dé organisatie van en voor professionals.” Source: RevenueBase Database · checked Sep 27, 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: advertising 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 advertising staffing firms.
Partial evidence: Its own public description names part of advertising staffing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advertising 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 49,512 advertising staffing firms worldwide

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Advertising staffing firms worldwide at a glance

As of Sep 27, 2026

14.6%Verified-email coverage

18.3Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

28,658

11-50

13,763

51-200

4,411

201-500

1,417

501-1,000

530

1,001-5,000

420

5,001-10,000

10001+

127

Email recency is reported on each country list linked below.

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 advertising 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: Every country. Country and city lists for advertising staffing firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “advertising 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 advertising 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 advertising 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, 131,644 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 27, 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.

Advertising staffing firms by location

179 lists · largest first

Every Advertising 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 advertising 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 advertising staffing firms are there worldwide?

RevenueBase identified 49,512 advertising staffing firms worldwide 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?

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

Which country has the most advertising staffing firms?

The United States leads with 11,998 companies, followed by the United Kingdom (5,345) and India (4,959). Every advertising staffing firms list by country and city is linked on this page.

Which city has the most advertising staffing firms?

London leads with 1732 headquartered companies, followed by New York (674) and Mumbai (460).

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 131,644 verified decision-maker contacts tracked across these 49,512 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 27, 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.