Company lists · Data refreshed November 2026

Top 25 HR outsourcing advisors worldwide

Name: HR outsourcing advisors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 77,416 companies tracked

RevenueBase identified 77,416 company matches for HR outsourcing advisors worldwide as of November 2026 and tracks 1,075,316 professional contacts across them, including 185,998 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for HR outsourcing advisors 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 outsourcing advisors 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

77,416Companies

1,075,316Contacts tracked

185,998Verified emails

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The 25 largest HR outsourcing advisors worldwide

Ranked by team size

Top 25 of 77,416 company matches for HR outsourcing advisors 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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	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
12	Synergie France	Exact match	Boulogne Billancourt, FranceHQ recorded Nov 6, 2026	5,001-10,000	3,590 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Randstad India	Exact match	Chennai, IndiaHQ recorded Nov 6, 2026	1,001-5,000	3,467 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
14	Randstad España	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	3,347 contacts →
	Exact match “Randstad es la empresa líder en España en soluciones de Recursos Humanos, haciendo posible que cada día personas en nuestro país tengan un empleo.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Randstad Italia	Exact match	Milan, ItalyHQ recorded Nov 6, 2026	1,001-5,000	3,164 contacts →
	Exact match “Crediamo nelle connessioni reali.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Allegis Global Solutions	Exact match	Hanover, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,097 contacts →
	Exact match “At Allegis Global Solutions (AGS), we’re in the human enterprise business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	PT Infomedia Solusi Humanika ISH	Exact match	Jakarta Selatan, IndonesiaHQ recorded Nov 6, 2026	10001+	2,854 contacts →
	Exact match “PT.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	SD Worx	Exact match	Antwerp, BelgiumHQ recorded Nov 6, 2026	5,001-10,000	2,852 contacts →
	Exact match “SD Worx is your HR, Pay and Time partner in Europe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	NGA Human Resources, An Alight Company	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	2,833 contacts →
	Exact match “At Alight \| NGA Human Resources our mission is to make HR work better.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Aston Carter	Exact match	Hanover, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,643 contacts →
	Exact match “Aston Carter provides world-class corporate talent solutions to thousands of clients across the globe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	HR Path	Exact match	Paris La Défense, GermanyHQ recorded Nov 6, 2026	1,001-5,000	2,607 contacts →
	Exact match “HR Path, an expert, and a major player in Human Resources, helps companies for who the human experience is essential to their digital transformation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Luandre Consultoria	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	501-1,000	2,380 contacts →
	Exact match “Consultoria em Recursos Humanos desde 1970 no mercado brasileiro, Tricampeã do Prêmio Top of Mind de RH em 2009, 2010 e 2011 e indicada nos últimos 12 anos consecutivos.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Corporativo Overall	Exact match	Lima, PeruHQ recorded Nov 6, 2026	10001+	2,335 contacts →
	Exact match “Somos una organización con presencia internacional con más de 38 años de exitosa trayectoria.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Remedy Intelligent Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	10001+	2,182 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Ciel HR	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	501-1,000	1,957 contacts →
	Exact match “CIEL HR is the only company in India which provides a comprehensive suite of technology-driven human resources solutions across the entire human resource chain and impacts every…” 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 outsourcing advisors”. 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 77,416 HR outsourcing advisors worldwide

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HR outsourcing advisors worldwide at a glance

As of Nov 6, 2026

17.3%Verified-email coverage

13.9Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · Sao Paulo

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

50,463

11-50

17,890

51-200

5,264

201-500

1,679

501-1,000

773

1,001-5,000

716

5,001-10,000

169

10001+

173

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 outsourcing advisors are linked below.
What qualifies: Company records worldwide whose business descriptions match “HR outsourcing advisors” 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 185,998 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 outsourcing advisors by location

321 lists · largest first

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

How many HR outsourcing advisors are there worldwide?

RevenueBase identified 77,416 company matches for HR outsourcing advisors 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?

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

Which country has the most HR outsourcing advisors?

The United States leads with 10,192 companies, followed by India (9,928) and Brazil (4,803). Every HR outsourcing advisors list by country and city is linked on this page.

Which city has the most HR outsourcing advisors?

Sao Paulo leads with 1207 company records, followed by London (1147) and Bangalore (1133).

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 185,998 professional contacts with verified work emails tracked across these 77,416 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.