Registry Data you can trust: 45% data quality uplift with CompanyData.com. Get a Data Sample

List of Marsh McLennan subsidiaries

Verified insights into Marsh McLennan’s global corporate structure and subsidiaries.

Marsh McLennan is a global professional services firm headquartered in New York, United States. Founded in 1905, Marsh McLennan operates through a broad corporate structure with 1,587 subsidiaries worldwide. This ownership data is part of CompanyData.com’s verified corporate hierarchy database, covering over 380 million companies worldwide.

Global presence of Marsh McLennan’s subsidiaries

Marsh McLennan has 1,587 subsidiaries spread across 68 countries. The largest numbers are in the United States with 642 entities (40%), followed by the United Kingdom with 250 subsidiaries (15.7%), and Australia with 67 subsidiaries (4.2%). These markets represent the main hubs of Marsh McLennan’s global operations across consulting, insurance, risk management, and other professional services.

Download Marsh McLennan's Subsidiaries Get a Data Sample

  • Global ownership data

  • Download subsidiary lists

  • Structured hierarchies

  • Contact and email data

Top Subsidiaries and Companies Owned by Marsh McLennan

See All Filters
Company Name Country City Address 1 Address 2 State/Province Postal Code Website Founding Year Yearly Revenue in U.S. Dollars Employees Total Business Legal Type - Description Number of Companies in Group Company Registration Number Email Phone Number UniqueID
1
Marsh SAS
France
Puteaux
Tour Ariane
5 Place de la Pyramide
Hauts-de-seine
92800
marsh.*****
1957
$255,439,902
852
Corporation
1637
57217441500255
************@***.***
+3*****00
0386612561
2
Mercer Investment Consulting LLC
USA
New York City
1166 Avenue of the Americas
N/A
New York
10036
mercer.*****
1975
$10,081,285
620
Corporation
1637
0140786
*********@********.***
+1*****00
0716557091
3
Mercer (france) SAS
France
Puteaux
Tour Ariane
5 Place de la Pyramide
Hauts-de-seine
92800
mercer.*****
1993
$127,230,962
537
Corporation
1637
39058945500117
******@******.***
+3*****00
0688000467
4
Mercer (france) SAS
France
Wasquehal
20 All Du Chateau Blanc
N/A
Nord
59290
mercer.*****
2007
$0
100
1637
39058945500125
************@********.***
+3*****00
0408306215
5
Mercer Health & Benefits LLC
USA
Sacramento
2520 Venture Oaks Way Ste 250
N/A
Sacramento
95833
N/A
N/A
$0
73
1637
N/A
************@*******.***
+1*****00
0943734978
6
Marsh USA INC.
USA
Columbus
325 John H Mcconnell Blvd Ste 350
N/A
Franklin
43215
marsh.*****
N/A
$0
64
1637
N/A
***********@*******.***
+1*****00
0717384112
7
Mercer (us) LLC
USA
Dallas
1717 Main St Ste 4400
N/A
Dallas
75201
mercer.*****
N/A
$0
17
1637
N/A
********@****.***
+1*****00
0187849636
8
Marsh & Mclennan Companies France
France
Puteaux
Tour Ariane la Defense 9
5 Place de la Pyramide
Hauts-de-seine
92800
marsh.*****
1974
$2,001,240
12
Corporation
1637
31631587800041
***********@*******.***
+3*****00
0873137255
9
Marsh SAS
France
Aix-en-provence
La Robole
655 Rue Pierre Simon Laplace
Bouches-du-rhône
13290
N/A
2018
$0
6
1637
57217441500305
***********@*****.***
0382958469
10
Marsh & Mclennan Companies, INC.
USA
Indianapolis
111 Monument Cir Ste 3550
N/A
Marion
46204
marsh.*****
N/A
$0
5
1637
N/A
***********@********.***
+1*****00
0290532739
11
Thomsons Online Benefits INC.
USA
New York City
1166 Avenue of the Americas
N/A
New York
10036
N/A
2019
$744,968
5
1637
N/A
************@******.***
0228428612
12
Marsh SAS
France
Toulouse
12 Rue Gabriel Peri
N/A
Haute-garonne
31000
marsh.*****
2017
$0
3
1637
57217441500297
*********@*******.***
+3*****11
0381417562
13
Marsh SAS
France
Nantes
34 B Bd Gabriel Guist Hau
N/A
Loire-atlantique
44000
marsh.*****
2020
$0
1
1637
57217441500339
************@******.***
+3*****20
0385921897
14
Mercer (france) SAS
France
Montpellier
Immeuble Alliance 2
77 Rue Samuel Morse
Hérault
34000
mercer.*****
2022
$0
0
1637
39058945500141
*********@***.***
0389534274
15
Mercer Consulting (france) SAS
France
Pessac
Zone Europarc
29 Avenue Leonard de Vinci
Gironde
33600
everbe.*****
2022
$0
0
1637
70201541300090
*****@******.***
+3*****35
0389075862
16
Oliver Wyman LIMITED
India
Mumbai
1201 Tower 2b One World Centre
Senapati Bapat Marg , Lower Parel (w)
Maharashtra
400013
oliverwyman.*****
N/A
$0
0
1637
27AABCO0593J1ZA
******@********.***
+9*****80
0965277504
17
Oliver Wyman LIMITED
India
Rangareddy
02b102, Kondapur Main Road, Kondapur, Whitefields, Laxmi Cyber C
N/A
Telangana
500081
N/A
N/A
$0
0
1637
36AABCO0593J1ZB
*******@*****.***
0882646919
18
Jlt Advisory Services LIMITED
India
New Delhi
98, Mezzanine Floor Hemkunt Tower
Nehru Place
Delhi
110019
N/A
2001
$0
0
1637
N/A
******@******.***
01027534592
19
Nera S.A.S.
France
Paris
1 Rue Euler
N/A
Paris
75008
nera.*****
2003
$10,568,380
13
Corporation
1637
45125211800026
*******@********.***
+3*****00
0382282927
20
Marsh SAS
France
Orange
Zac Du Coudoulet
24 Rue Du Royaume Uni
Vaucluse
84100
marsh.*****
2001
$0
10
1637
57217441500198
*********@*****.***
+3*****99
0509837027
21
Mercer Consulting (france) SAS
France
Paris
23 Bd Des Italiens
N/A
Paris
75002
mercer.*****
1984
$0
0
1637
70201541300033
************@******.***
+3*****00
0380308211
22
Oliver Wyman SNC
France
Paris
7 Rue Rouget de L Isle
N/A
Paris
75001
oliverwyman.*****
2022
$0
0
1637
34496224600064
*****@*******.***
+3*****00
0390719129
23
Mercer (france) SAS
France
Levallois-perret
36 Rue Raspail
N/A
Hauts-de-seine
92300
mercer.*****
1998
$0
0
1637
39058945500042
************@*******.***
+3*****89
0402297022
24
Marsh & Mclennan Companies, INC.
USA
New York City
1166 Avenue of the Americas
N/A
New York
10036
marshmclennan.*****
1871
$24,458,000,000
90000
Corporation
1637
1688200
********@****.***
+1*****00
0152675489
25
Seabury & Smith Borrower LLC
USA
Urbandale
12421 Meredith Dr
N/A
Polk
50398
facebook.*****
N/A
$0
3269
1637
N/A
*******@********.***
+1*****58
0137600673
26
Mercer (australia) PTY LTD
Australia
Adelaide
L 7 91 King William St
N/A
South Australia
5000
N/A
1977
$542,857,459
322
Corporation
1637
005315917
******@*******.***
+6*****60
0864851467

Companies by Employee Size

  • 0 or Unknown 418
  • 1-4 353
  • 5-9 239
  • 10-19 194
  • 20-49 184
  • 50-99 82
  • 100-199 70
  • 200-499 65
  • 500-999 21
  • 1.000-4.999 6
  • 5.000-9.999 1

Companies by Revenue Size (in USD)

  • 0 or Unknown 955
  • 1 to 100.000 5
  • 100.001 to 499.999 133
  • 500.000 to 999.999 114
  • 1.000.000 to 4.999.999 156
  • 5.000.000 to 9.999.999 68
  • 10.000.000 to 49.999.999 110
  • 50.000.000 to 99.999.999 38
  • 100.000.000 to 499.999.999 34
  • 500.000.000 to 999.999.999 5
  • 1.000.000.000 or more 15
Download Data

Access 1,000 subsidiaries free

Discover Marsh McLennan’s Global Corporate Structure

Marsh McLennan’s corporate network is part of over 41 million corporate hierarchies available in our company ownership database. It shows how the group is structured worldwide, with parent companies and subsidiaries backed by verified information from companies in more than 200 countries and territories. See how our data works and request a tailored sample today.

Get Free Data Sample

Marsh McLennan Company Facts

Where is Marsh McLennan headquartered?

In New York, United States (company ID 0152675489).

How many subsidiaries does Marsh McLennan have?

Around 1,587 companies in over 80 countries.

Who owns Marsh McLennan?

Marsh McLennan is publicly traded with no single majority owner.

Is Marsh McLennan a US company?

Yes. It is incorporated in the United States.

How many people work for Marsh McLennan?

The company employs approximately 85,000 people globally.

Corporate family tree

Understanding Marsh McLennan's Ownership Structure

Knowing who owns and controls a company helps reveal how it operates worldwide. Our corporate hierarchy data shows connections between parent companies, subsidiaries, and shareholders, laying out the structure and control within global groups. Whether you are researching Marsh McLennan or any other large multinational, this detailed ownership insight supports compliance checks, market research, and better CRM data management. CompanyData.com offers verified ownership data on over 380 million companies globally, giving you a clear picture of company relationships across industries and countries.

How We Chart Global, National, and Local Headquarters for Marsh McLennan

At CompanyData.com, each company profile, such as Marsh McLennan, is detailed using a three-level headquarters hierarchy: Global, National, and Local. This method clarifies how different branches connect in the wider group.

Our three key levels

  • Global Headquarter — Marsh McLennan Companies, Inc., headquartered in New York City, USA, acts as the global headquarter, overseeing all group operations worldwide.
  • National Headquarters — Country-specific entities manage local operations and report to the global parent. Examples include Marsh McLennan Canada Ltd. (Canada), Marsh McLennan UK Ltd. (United Kingdom), and Marsh McLennan France SARL (France).
  • Local Headquarters — Local offices operate within regions or cities, handling area-specific compliance, sales, and service delivery.

Every company in the group is assigned a unique ID, helping to link subsidiaries to their parent firms and track ownership. This allows seamless integration into your systems.

How ownership control works

Control is defined by shareholding. Where Marsh McLennan owns over 50% of a company, that company is flagged as a controlled subsidiary. We highlight these majority stakes to clearly map the corporate groups. This helps users understand complex relationships in groups like Marsh McLennan as well as other global firms.

Why it is important

This model reveals who makes key decisions within the Marsh McLennan Group, making compliance, risk assessment, and corporate research easier. With verified ownership covering more than 1,587 subsidiaries across 100+ countries, including significant presence in the USA (642 entities), United Kingdom (250 entities), Australia (67 entities), Canada (51 entities), and France (27 entities), our platform provides clarity for international teams working with Marsh McLennan’s complex structure.

 

Marsh McLennan

Who This Solution Is For

CompanyData.com provides verified insights into the global corporate structure of Marsh McLennan, offering detailed data on its subsidiaries worldwide. This information supports compliance checks, CRM enrichment, market research, and competitive analysis. Sample data for evaluation is available, with larger datasets (up to 1,000 companies) for qualified corporate users with a verified website and clear use case. For direct contact or lead lists, please see our Company Data Platform.

  • Submit your data needs and use case
  • Samples available for registered companies with an active website
  • Data delivered in CSV or Excel formats
  • API access is offered

Get Your Free Quote

Tell us about your data needs or challenge, and our team will send you a tailored ownership data sample within 24 hours.

"*" indicates required fields

Tell us how you'll leverage our data for your data-driven project.

We take privacy seriously and comply with Data Protection Laws. Our Privacy policy & Cookie Policy apply to the processing of personal data.

9.2
85 reviews
Kiyoh

Marsh McLennan global corporate structure and subsidiary data – FAQs

You can get Marsh McLennan company data through API, bulk files, or the Bold Platform. We build custom datasets based on your specific countries, industries, and company profiles. After sharing your needs, our experts prepare a tailored dataset and send a free quote with record counts and sample data within 24 hours. Once approved, we deliver the data quickly in Excel, API, or bulk file format.

Yes. CompanyData.com offers complete global business data across all companies and sectors. Tell us your requirements and we will create a custom dataset with verified and up-to-date business information. You get a free quote, record count, and sample within 24 hours. Delivery is quick and available via Excel, API, or bulk files.

Pricing for Marsh McLennan company data depends on the details and delivery method you choose. Whether you want all subsidiaries or a smaller list, we have flexible pricing. Request a free quote and record count within 24 hours. We include a sample of 10 company contacts. At CompanyData.com, you pay only for verified data you need.

We accept credit cards, bank transfers, and PayPal. Payments are secure, and invoices are provided. For large or ongoing orders, subscription billing and custom invoicing are available. Contact our sales team for special arrangements — we’re here to assist.

You will receive verified data on Marsh McLennan and its subsidiaries worldwide, updated regularly. The dataset includes company names, registration details, locations, industry codes, financial info, and key contacts. Access is available via the Bold Platform, API, or bulk files. Our coverage is global and complete.

Our data is sourced from verified global business registers, financial filings, LEI records, trusted partners, and official company websites. Each record is cross-checked and validated to ensure accuracy, timeliness, and GDPR compliance.

How can we help?

Send us your question and our data experts will get back to you within 24 hours with a helpful answer.

"*" indicates required fields

We take privacy seriously and comply with Data Protection Laws. Our Privacy policy & Cookie Policy apply to the processing of personal data.

Get a Free Quote and Sample

Tell us your target group, and we’ll send you a free quote and a tailored company ownership dataset — sample included. Call +31 20 705 236 or email sales@companydata.com. Ready to order? Simply reply to the quote, and CompanyData.com delivers your dataset in CSV or Excel within 24 hours.

Get Free Sample

You’ll be in good company

Discover more Top Companies

3i Group 3M A2A AB InBev ABB Abu Dhabi Islamic Bank Accenture Acciona Adani Enterprises Adecco Adidas Adobe ADP Advance Auto Parts Advanced Micro Devices AECOM Technology Aegon Aena AGCO Corporation Ageas Agilent Technologies Agility Ahold Delhaize Air France-KLM Air Liquide Airbus Ajinomoto Akzo Nobel Albertsons Alcon Alibaba Group Allianz Allstate Alpha Bank Alphabet Inc Alstom Altice USA Amazon Amcor Amerco América Móvil American Airlines American Tower Ameriprise Financial Ametek Amphenol Analog Devices Anglo American Aon Apollo Global Management Apple Applied Materials Aptiv Aramark Aramco ArcelorMittal Archer Daniels Midland Arkema Arrow Electronics Asahi Group Holdings Asahi Kasei Asian Paints ASML Holding Assa Abloy Astellas Pharma AstraZeneca AT&T Atlas Copco Atlassian Autodesk AutoNation AutoZone AXA BAIC Motor Baidu Baker Hughes Bank of America Bank of Baroda Bank of China Bank of Montreal Bank of Tianjin Bankinter Barclays Barrick Gold BASF Bausch Health Companies Baxter Bayer BBVA Becton Dickinson Beiersdorf AG Berkshire Hathaway Best Buy BHP BlackRock Blackstone Block Inc., Bluescope Steel BMW BNP Paribas Boeing Booking Holdings BorgWarner Boston Scientific Bouygues BP Brenntag Bridgestone Bristol Myers Squibb British American Tobacco Broadcom Brookfield Asset Management Brown-Forman BT Group Builders FirstSource Bunge Bunzl BYD Campbell Soup Canadian Tire Canara Bank Canon Capgemini Capital One Cardinal Health Carnival Corporation Carrefour Carrier Global CBRE CDW Corporation Celanese Cellnex Telecom Cemex Centene Centrica CGI Charoen Pokphand Foods Charter Communications Chevron Corporation China Mobile Chipotle Mexican Grill Chow Tai Fook Jewellery Chubb Cisco Citigroup CME Group
CMS Energy CNH Industrial CNPC Capital Coca-Cola Cognizant Colgate-Palmolive Comcast Corporation Comerica Commercial Bank of Qatar Commerzbank Compal Electronics Compass Group Conagra Brands Concordia Financial Group ConocoPhillips Constellation Brands Continental Corteva Cosco Shipping Costco Wholesale Covestro CRH CrowdStrike CSC Financial CSL CSX Cummins Dai-ichi Life Daiichi Sankyo Daikin Daimler Truck Danaher Danone Danske Bank Darden Restaurants Dell Delta Air Lines Delta Electronics Denso Dentsu Deutsche Bank Deutsche Lufthansa Deutsche Telekom DexCom Diageo Dollar General Dollar Tree Doosan Dover Dow DSV DuPont DXC Technology E.ON Eaton eBay Ecolab Electronic Arts Elevance Health Eli Lilly Emaar Properties Emera Emerson Electric Empire Company Limited Enbridge EnBW Enel ENEOS Holdings ENGIE Eni ENN Natural Gas Entergy EQT Equitable Holdings Ericsson EssilorLuxottica Essity Estee Lauder Companies Eurofins Scientific Societe Europeenne Exelon Corporation Expedia Group Expeditors International Experian ExxonMobil Facebook Falabella FedEx Femsa Ferrari Ferrovial FirstRand Fiserv Flex Ltd Flutter Entertainment FMC Ford Fortive Fox Corporation Freeport-McMoRan Fresenius Fujifilm Holdings Fujitsu Garmin Gazprom General Dynamics General Electric General Mills General Motors Genuine Parts Company Gilead Sciences Glencore Global Payments Goertek Inc. Goodman Group Goodyear Tire & Rubber Company Google Grupo Bimbo GSK Guotai Junan Securities Haier Halliburton Halyk Bank Hanwha HCA Healthcare HCL Technologies HDFC Bank Henkel Hess Corporation Hewlett Packard Enterprise Hewlett-Packard Hexagon AB Hikvision Hitachi HNA Technology Hoa Phat Group Hokuhoku Financial Group Holcim Hologic Hon Hai Precision Honda Honeywell Hong Leong Financial HOYA Corporation HSBC Huntington Bank Hyundai
Iberdrola ICICI Bank Illinois Tool Works Illumina Imperial Brands Infosys Ingersoll Rand Inpex Intel Intercontinental Exchange Intesa Sanpaolo Intuit Invesco Investec IQVIA Itochu Jardine Matheson Jefferies John Deere Johnson Controls International JPMorgan Chase Kakao Kellogg Kering Keurig Dr Pepper Keysight Technologies KIA Kimberly-Clark Kingspan Group Kohl’s Corporation Kohlberg Kravis Roberts Kone Koninklijke KPN N.V. Kraft Heinz Company Kroger Kuwait Finance House L3Harris LabCorp Las Vegas Sands Legrand Lenovo Leonardo LG Liberty Global Liberty Media Corporation List of Top 2000 Companies Live Nation Entertainment Lockheed Martin Louis Vuitton LukOil LyondellBasell Industries M&G Macquarie Group Macy’s Magna International Manulife Marriott International Marsh McLennan Martin Marietta Materials Marubeni Mastercard Mazda Motor McDonald’s McKesson Mediobanca Medipal Holdings Medtronic Mercedes-Benz Group MetLife Michelin Micron Technology Microsoft Mitsubishi Mitsui & Co. Mizuho Financial Group Molson Coors Mondelez International Monster Beverage Morgan Stanley Motorola Solutions NASDAQ National Grid NatWest Group Nestlé Netflix New Hope Liuhe Newmont NextEra Energy Nidec Nintendo Nissan Motor Nokia Nomura Holdings Northern Trust Northrop Grumman Novartis Novo Nordisk NRG Energy Nucor Nvidia NVR, Inc. NXP Semiconductors Occidental Petroleum Old Mutual Omnicom Group Oracle Organon Orix Owens Corning Paccar Palo Alto Networks Panasonic Paramount Parker-Hannifin PayPal PBF Energy Pegatron Pernod Ricard Petronas Chemicals Philip Morris International Philips PNC Poste Italiane PPG Principal Financial Group Procter & Gamble Progressive Prudential Publicis Groupe Punjab National Bank Qualcomm Quanta Services Raiffeisen Bank International Rakuten Raymond James Raytheon Technologies Reckitt Reinsurance Group of America Reliance Industries Limited Renault Repsol Restaurant Brands International Rexel Richemont Rio Tinto Rocket Companies
Rockwell Automation Rogers Communications Rolls-Royce Holdings Rosneft Royal Bank of Canada Royal Caribbean Group S&P Global Safran Salesforce Samhallsbyggnadsbolaget I Norden Samsung Sandvik Sanofi Santander SAP SBI Holdings Schindler Holding Schlumberger Schneider Electric Schroders Scotiabank Sempra Seven & I Holdings Shell Company Profile Sherwin-Williams Shinsei Bank Sibanye Stillwater Siemens SK Hynix SM Investments Snap Societe Generale Sodexo SoftBank Group Sony Southwest Airlines SS&C Technologies Standard Chartered Stanley Black & Decker Starbucks State Street Stellantis Sumitomo Sun Pharma Industries Suzuki Motor Swatch Group Swiss Re Synopsys Taiwan Semiconductor Targa Resources Target Tata Motors Tata Steel Tatneft TBEA TC Energy TCL TD Bank Group TD Synnex Corporation TE Connectivity Tech Mahindra Techtronic Industries Telefónica Teleperformance Telstra TELUS Tencent Holdings Tenet Healthcare Tesco Tesla Teva Pharmaceutical Texas Instruments Textron Inc. Thales The Hartford The Walt Disney Company Thomson Reuters ThyssenKrupp Group TJX Companies Tokio Marine Holdings Tongwei Toshiba TotalEnergies Toyota TransDigm Group Transneft Transurban Group Twitter Tyson Foods UBS UniCredit Unilever United Parcel Service US Bancorp US Foods Usiminas Veolia Environnement Verizon Vestas Viatris VINCI Virgin Money UK Visa Inc Vivendi Vodafone Volkswagen Volvo Group Wabtec Corporation Walgreens Walmart Warner Bros. Discovery Welltower Wens Foodstuff Group Wesfarmers West Fraser Timber Co. West Japan Railway Company West Pharmaceutical Services Western Alliance Bancorp Western Digital Westlake Chemical Westpac Whirlpool Willis Towers Watson Wilmar International Wipro Wolters Kluwer Woodside Energy Woolworths Woori Financial Group Workday World Fuel Services WPG Holdings WPP Wuxi Apptec Xiaomi Yamaha Motor Yum Brands Yum China Holdings Zalando Zimmer Biomet Zoom Video Communications Zoomlion Heavy Industry ZTE Corporation Zurich Insurance Group
Yes, give me 10 profiles
Request sample Try 10 Contacts Free
Call
+31(0)20 705 2360