List of Aon subsidiaries

Verified insights into Aon’s global corporate structure and subsidiaries.

Aon plc is a global professional services firm headquartered in Chicago, United States. Established over 100 years ago, Aon operates through a wide network of subsidiaries, with a total of 1,509 entities worldwide. This ownership information comes from CompanyData.com’s verified corporate hierarchy database, which covers more than 380 million companies globally.

Geographic spread of Aon’s subsidiaries

Aon has 1,509 subsidiaries across 69 countries, with 775 in the United States (51.3%), 92 in Canada (6.1%), and 158 in the United Kingdom (10.5%). Together, these three countries account for nearly 68% of Aon’s worldwide subsidiaries, supporting its services across risk management, insurance brokerage, and consulting industries.

Aon Holdings Corretores De SegurosAon Holdings Corretores De Seguros
Showing 26 of 1,706 companies
Company NameCountryCityAddress 1State/ProvincePostal CodeWebsiteFounding YearYearly Revenue in U.S. DollarsEmployees TotalBusiness Legal Type - DescriptionNumber of Companies in GroupCompany Registration Number
1
Aon Holdings Corretores De Seguros
Brazil
Belo Horizonte
Rua Sergipe 1492
Minas Gerais
30130-174
convista.*****
2001
0
46
1707
48102552000641
2
Aon Holdings Corretores De Seguros
Brazil
Campinas
Rua Odila Maia Rocha Brito 527
São Paulo
13092-110
N/A
1987
0
23
1707
48102552000307
3
Aon Holdings Corretores De Seguros
Brazil
Recife
Rua Padre Carapuceiro 706
Pernambuco
51020-280
N/A
N/A
0
0
1707
48102552002423
4
Aon Risk Services Southwest, INC.
USA
Houston
5555 San Felipe St Ste 1500
Harris
77056
aon.*****
1970
$16,025,331
450
Corporation
1707
N/A
5
Aon Consulting, INC.
USA
Chicago
180 N Stetson Ave Ste 2800
Cook
60601
N/A
N/A
0
300
1707
N/A
6
Aon Financial Services Group, INC.
USA
Chicago
123 N Wacker Dr Ste 2500
Cook
60606
aon.*****
1988
$2,304,733
105
Corporation
1707
N/A
7
Alexander Aluminum Products, INC.
USA
Louisville
220 W Main St Ste 1800
Jefferson
40202
N/A
2012
$1,649,981
54
Corporation
1707
N/A
8
Affinity Insurance Services, INC.
USA
Boston
1 Federal St Fl 20
Suffolk
02110
aon.*****
N/A
0
53
1707
N/A
9
Lenox Advisors, INC.
USA
New York City
90 Park Ave Fl 18
New York
10016
lenoxadvisors.*****
2001
$10,020,647
30
Corporation
1707
2713548
10
Pension Solutions, INC.
USA
Cleveland
28601 Chagrin Blvd Ste 550
Cuyahoga
44122
nfp.*****
2005
$3,442,397
19
Corporation
1707
N/A
11
Aon Risk Insurance Services West, INC.
USA
Portland
851 Sw 6th Ave Ste 550
Multnomah
97204
aon.*****
N/A
0
19
1707
N/A
12
Aon Consulting, INC.
USA
Washington
2001 K St Nw Ste 625n
District of Columbia
20006
aon.*****
N/A
0
17
1707
N/A
13
Aon Risk Consultants, INC.
USA
Philadelphia
1 Liberty Pl Ste 1000
Philadelphia
19103
aon.*****
N/A
0
16
1707
N/A
14
Aon Risk Services Companies, INC.
USA
Milwaukee
10700 W Research Dr Ste 450
Milwaukee
53226
aon.*****
N/A
0
16
1707
N/A
15
Aon Consulting, INC.
USA
San Francisco
851 van Ness Ave
San Francisco
94109
N/A
N/A
0
12
1707
N/A
16
Insgroup Services CO
USA
Greenwood Village
5350 S Roslyn St Ste 306
Arapahoe
80111
N/A
1996
$424,866
12
Corporation
1707
19871568464
17
Aon Consulting, INC.
USA
Chicago
230 W Monroe St Ste 1000
Cook
60606
N/A
N/A
0
11
1707
N/A
18
Aon Consulting, INC.
USA
Minneapolis
8300 Norman Center Dr Ste 1000
Hennepin
55437
aon.*****
N/A
0
11
1707
N/A
19
Custom Benefit Programs, INC.
USA
Foothill Ranch
27042 Towne Centre Dr Ste 265
Orange
92610
N/A
N/A
0
11
1707
N/A
20
Aon Consulting, INC.
USA
Bellevue
2600 116th Ave Ne Ste 200
King
98004
N/A
N/A
0
10
1707
N/A
21
Aon Risk Services Companies, INC.
USA
Shawnee Mission
4500 College Blvd Ste 310
Johnson
66211
N/A
N/A
0
10
1707
N/A
22
Aon Consulting, INC.
USA
Buffalo
205 Park Club Ln
Erie
14221
N/A
N/A
0
10
1707
N/A
23
Muirfield Underwriters LTD
USA
Phoenix
11811 N Tatum Blvd Ste 3057
Maricopa
85028
N/A
1997
$102,632
9
Corporation
1707
2325940
24
Forester Benefits Management LLC
USA
Knoxville
1909 Pinnacle Pointe Way
Knox
37922
foresterbenefits.*****
2019
$622,350
8
Corporation
1707
000536476
25
Aon Consulting, INC.
USA
Woodland Hills
21900 Burbank Blvd Ste 101
Los Angeles
91367
N/A
N/A
0
8
1707
N/A
26
Aon Consulting, INC.
USA
Escondido
1815 S Centre City Pkwy
San Diego
92025
aisinsurance.*****
N/A
0
8
1707
N/A

Showing 26 of 1,706 companies

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Explore Aon's Global Corporate Structure

Aon’s ownership network is part of over 41 million corporate hierarchies in our company ownership database. It shows how Aon is organized worldwide, listing parent companies and subsidiaries with verified data from groups active in 150 countries and jurisdictions. Discover how our data works — and request a sample tailored to your needs.

Aon Company Facts

Where is Aon headquartered?

In Chicago, United States (Aon Center).

How many subsidiaries does Aon have?

About 1,509 worldwide across 71 countries.

Who owns Aon?

Aon plc is publicly listed; no single majority shareholder.

Is Aon a US company?

Yes. Aon plc is incorporated in the USA.

How many people work for Aon?

Aon employs over 50,000 people globally.

Corporate family tree

Why Understanding Aon's Ownership Structure is Important

Knowing who owns and controls a company helps you understand how it functions and connects globally. Our corporate hierarchy data allows you to trace relationships between parent companies, subsidiaries, and shareholders, showing control, structure, and risks within any global group. This insight is vital when looking at Aon or other multinational corporations for compliance purposes, market analysis, and better data management. With verified ownership records of over 380 million companies worldwide, CompanyData.com delivers clear data on corporate ownership across industries and countries.

How We Structure Global, National, and Local Headquarters for Aon

At CompanyData.com, each company profile including Aon is organized using a three-level model: Global, National, and Local headquarters. This structure shows how every entity fits within the larger corporate family.

Levels of corporate hierarchy explained

  • Global HeadquarterAon plc is the global headquarter for the Aon Group and serves as the top-level parent company, based in London, United Kingdom. It holds overall control over the entire group.
  • National Headquarters — These are country-specific entities within the group, coordinating local operations and reporting back to the global parent. Some examples include Aon USA Inc., Aon Canada Ltd., and Aon Netherlands B.V.
  • Local Headquarters — These manage specific branches, offices, or regional operations to ensure local compliance and market presence within their territories.

Each entity receives a unique identifier to link subsidiaries with parent firms, trace ownership paths, and enable easy integration with your internal systems.

How we identify control

Control is defined based on ownership shares. When a company owns over fifty percent of another, it is viewed as a controlled subsidiary. Our focus on majority-controlled subsidiaries provides a clear picture of ownership and corporate hierarchy, capturing the full global scale of groups like Aon.

Why this matters for your business

This methodology highlights who ultimately makes decisions within the Aon Group, streamlines compliance checks, aids in merger and acquisition analysis, and supports risk management. By mapping each company with verified ownership data, CompanyData.com gives you confidence to explore Aon’s corporate structure fully. With over 1,500 entities linked across more than 85 countries, our platform creates transparency for complex international corporate families.

 

How We Structure Global, National, and Local Headquarters for Aon

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CompanyData.com supports global organizations that need verified insights into corporate ownership structures, from CRM enrichment and compliance workflows to market intelligence and analytics. We provide free evaluation samples; larger data samples (for example, up to 1,000 companies) are available to qualified corporate buyers with a defined use case and an active company website. If your primary need is contact or lead lists, please visit our Company Data Platform instead.

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85reviews

Aon ownership & subsidiary data – FAQs

Aon plc is a leading global professional services firm providing a broad range of risk, retirement, and health solutions. Founded over a century ago, its headquarters are located in London, United Kingdom. Aon operates across multiple countries worldwide, managing risk and helping businesses optimize performance through data and analytics.

Key Business Areas of Aon:

Aon’s operations are divided into major segments that support its global presence:

  1. Risk Solutions: This segment offers risk management, insurance brokerage, and consulting services. Aon advises businesses on how to reduce risks and protect assets through tailored insurance and risk transfer strategies.
  2. Retirement Solutions: Aon provides retirement planning, consulting, and administration services helping organizations manage employee benefit programs and pension plans effectively.
  3. Health Solutions: This area focuses on health benefit consulting and solutions that help businesses manage employee health costs and promote wellbeing.
  4. Data & Analytics: Aon leverages advanced data capabilities to support decision making and provide insights on risk and human capital.

Aon’s Financial Overview:

Aon reported revenue of approximately $12.19 billion, reflecting its strength in global markets and diversified service offerings. Its financial performance continues to be driven by growth in advisory services and solutions across risk, health, and retirement sectors.

Global Footprint and Subsidiaries:

With over 1,500 subsidiaries operating internationally, Aon has a strong presence in 94 countries. Key country markets include the USA (775 subsidiaries), UK (158 subsidiaries), Canada (92 subsidiaries), Germany (42 subsidiaries), Spain (56 subsidiaries), and Italy (83 subsidiaries). This extensive network supports local and multinational clients effectively.

Sustainability and Corporate Responsibility:

Aon emphasizes responsible business practices including environmental sustainability and social initiatives. The company invests in programs promoting diversity, equity, and inclusion, as well as community engagement globally.

Challenges and Opportunities:

Aon faces challenges like regulatory changes and market volatility but continues to see opportunities through technology innovation and expanded advisory services, especially in emerging markets.

Conclusion:

As a global leader in risk and human capital solutions, Aon’s broad portfolio and international reach position it well for future growth. For up-to-date details, review Aon’s official reports and verified data from sources like CompanyData.com.

 

 

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If you need company data from any organization or industry, CompanyData.com provides complete global coverage. You’ll get accurate, verified business information across every country and sector. Simply tell us what you’re looking for, and our experts will prepare a custom dataset that fits your goals. Within 24 hours, you’ll receive a free quote, record count, and sample data. Once approved, we deliver your data fast — via Excel, API, bulk file, or directly in the Bold Platform.

The price of our Aon company data depends on your details and delivery method. Whether you need a list of subsidiaries or the full dataset via API or bulk files, we offer flexible pricing to suit your needs. Request a free quote and record count within 24 hours — our team provides transparent pricing and a free sample of 10 company contacts. At CompanyData.com, you only pay for the verified global data you need.

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At CompanyData.com, you can access detailed, verified data on Aon plc and all its subsidiaries, updated daily. This includes company names, registration details, locations, industry classifications, financial indicators, and key contacts. You can download the data via the Bold Platform, API, or bulk file delivery. Our database offers 100% worldwide company coverage, ensuring complete and accurate insights.

At CompanyData.com, our data comes from verified global business sources to ensure accuracy and full coverage. We combine official registers, financial filings, LEI records, trusted partners, and verified company websites. All data is cross-checked and validated by our experts, ensuring it’s accurate, up-to-date, and GDPR-compliant.

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