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.

  • Global ownership data

  • Download subsidiary lists

  • Structured hierarchies

  • Contact and email data

Top Subsidiaries and Companies Owned by Aon

Company NameCountryCityAddress 1State/ProvincePostal CodeWebsiteFounding YearYearly Revenue in U.S. DollarsEmployees TotalBusiness Legal Type - DescriptionNumber of Companies in GroupCompany Registration Number
1
Baloo
France
Marseille
118 Rue Roger Mathurin
Bouches-du-rhône
13010
baloo-gestion.*****
2013
$18,478,858
194
N/A
N/A
79756683300019
2
Charon Planning Health & Welfare, LLC
USA
Warrington
2600 Kelly Rd
Bucks
18976
charonplanning.*****
2007
$915,782
53
N/A
N/A
0000567889
3
Nfp Property & Casualty Services, INC.
USA
Flagstaff
214 E Birch Ave
Coconino
86001
nfp.*****
N/A
$0
20
N/A
N/A
N/A
4
Aon Consulting, INC.
USA
Salinas
307 Main St Ste 340
Monterey
93901
aon.*****
N/A
$0
18
N/A
N/A
N/A
5
Rose & Kiernan, INC.
USA
Watertown
1116 Arsenal St Ste 100
Jefferson
13601
rkinsurance.*****
N/A
$0
11
N/A
N/A
N/A
6
Baker Capital Advisers
USA
Winston-salem
121 Reynolda Vlg Ste A
Forsyth
27106
bakercapital.*****
2005
$247,208
2
N/A
N/A
N/A
7
Nfp CORP.
USA
Santa Ana
1851 E 1st St Ste 1650
Orange
92705
N/A
N/A
$0
1
N/A
N/A
N/A
8
Nfp Intermediate Holdings B CORP.
USA
Littleton
532 Union St
Grafton
03561
nfp.*****
N/A
$0
0
N/A
N/A
N/A
9
Aon Holdings France SNC
France
Colombes
420 Rue Estienne D Orves
Hauts-de-seine
92700
aon.*****
2008
$0
0
N/A
N/A
50121141100027
10
Delta Assurances
France
Paris
31 Rue de la Federation
Paris
75015
aonassurances.*****
2025
$0
0
N/A
N/A
05780817200084
11
Delta Assurances
France
Marseille
Parc Des Fonderies
Bouches-du-rhône
13010
delta-assurances.*****
1957
$21,024,518
118
N/A
N/A
05780817200043
12
Aon France
France
Toulouse
25 All Jean Jaures
Haute-garonne
31000
aon.*****
2014
$0
6
N/A
N/A
41457224800287
13
Aon Holdings Corretores De Seguros
Brazil
Campinas
Rua Odila Maia Rocha Brito 527
São Paulo
13092-110
N/A
1987
$0
23
N/A
N/A
48102552000307
14
Aon Holdings Corretores De Seguros
Brazil
Sao Paulo
Rua Dr Rubens Gomes Bueno 691
São Paulo
04730-903
N/A
1976
$172,178,264
1,405
N/A
N/A
48102552000137
15
Aon France
France
Angoulême
All de Bellevue
Charente
16000
aon.*****
2003
$0
100
N/A
N/A
41457224800162
16
Aon France
France
Marseille
3 Rue Gaston Castel
Bouches-du-rhône
13016
aon.*****
2002
$0
100
N/A
N/A
41457224800121
17
Rydy Jth 2, LLC
USA
Hollywood
4000 Hollywood Blvd Ste 500
Broward
33021
N/A
2020
$626,253
2
N/A
N/A
L20000366226
18
Aon CORPORATION
USA
Chicago
200 E Randolph St
Cook
60601
aon.*****
1979
$1,813,659,058
65,000
N/A
N/A
0883674
19
Aon Consulting Worldwide, INC.
USA
Franklin
720 Cool Springs Blvd Ste 680
Williamson
37067
aon.*****
N/A
$0
1,511
N/A
N/A
N/A
20
Aon Consulting Worldwide, INC.
USA
Pasadena
N/A
Los Angeles
91189
N/A
N/A
$0
1,163
N/A
N/A
N/A
21
Aon Re, INC.
USA
Minneapolis
5600 W 83rd St Ste 1100
Hennepin
55437
aon.*****
2012
$72,690,216
710
N/A
N/A
55203385
22
Aon Re Worldwide, INC.
USA
Chicago
200 E Randolph St Fl 15
Cook
60601
aon.*****
1994
$7,174,367
500
N/A
N/A
N/A
23
Aon Fac, INC.
USA
Chicago
200 E Randolph St Fl 15
Cook
60601
aon.*****
1988
$32,989,932
400
N/A
N/A
363599313
24
Martin Boyer Company, INC.
USA
Chicago
175 W Jackson Blvd Fl 10
Cook
60604
N/A
1990
$1,792,027
160
N/A
N/A
55801657
25
Aon Risk Services INC Of Washington D C
USA
Washington
2001 K St Nw Ste 625n
District of Columbia
20006
aon.*****
2012
$9,566,072
150
N/A
N/A
N/A
26
Nfp Corporate Services (ny), LLC
USA
New York City
200 Park Ave Rm 3202
New York
10166
grahampartners.*****
2004
$6,152,064
100
N/A
N/A
3132353

Companies by Employee Size

  • 1-4421
  • 5-9284
  • 10-19253
  • 20-49195
  • 50-99126
  • 10.000+2
  • 100-19957
  • 200-49941
  • 500-9998
  • 1.000-4.99920
  • 0 or Unknown325

Companies by Revenue Size (in USD)

  • 0 or Unknown916
  • 1 to 100.00030
  • 100.001 to 499.999205
  • 500.000 to 999.999130
  • 1.000.000.000 or more9
  • 1.000.000 to 4.999.999243
  • 5.000.000 to 9.999.99968
  • 10.000.000 to 49.999.99975
  • 50.000.000 to 99.999.99923
  • 100.000.000 to 499.999.99927
  • 500.000.000 to 999.999.9996

Get 1,000 subsidiaries free

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

Who This Solution Is For

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.

  • Tell us about your use case or data requirements
  • Samples are available to officially registered companies with an active website
  • Files delivered in CSV or Excel format
  • API integrations available

Get Your Free Quote

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

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.

 

 

You can access Aon company data through API, bulk files, or the Bold Platform. We create custom datasets based on your target countries, industries, and company profiles. After you share your criteria, our experts prepare a tailored dataset and send a free quote with record counts and sample data within 24 hours. Once approved, we deliver your data quickly in your preferred format — via Excel, API, bulk file, or directly in the Bold Platform.

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.

At CompanyData.com, we offer secure and flexible payment options for purchasing company data, including credit cards, bank transfer, and PayPal. All payments are processed safely, and invoices are provided. For larger or ongoing access, we also support subscription billing and custom invoicing. Need a special arrangement? Contact our sales team — we’re happy to help.

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.

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.

Amazon
Booking.com
Salesforce
Uber
Wolters Kluwer
Zalando
The Economist
TomTom
Sennheiser
Samsonite
Samsung
Porsche
Philips
Rentokil
P&G
Nespresso
Nike
Mercedes-Benz
Mitsubishi
NEC
LG
McDonald's
McKinsey
Lebara
Lenovo
Kantar
JBL
Just Eat
Grohe
Hello Fresh
Google
Getir
E.ON
Essity
EY
Danone
Deloitte
Dyson
Bosch
Casio
CM
BASF
Blom
ATAG
Bain & Company
Airbnb
Accenture
Adecco
Abbott Laboratories
Engie
Porsche
Mercedes-Benz
NEC
Terre des Hommes
The Economist

What our customers say

Discover more Top Companies

3i Group3MA2AAB InBevABBAbu Dhabi Islamic BankAccentureAccionaAdani EnterprisesAdeccoAdidasAdobeADPAdvance Auto PartsAdvanced Micro DevicesAECOM TechnologyAegonAenaAGCO CorporationAgeasAgilent TechnologiesAgilityAhold DelhaizeAir France-KLMAir LiquideAirbusAjinomotoAkzo NobelAlbertsonsAlconAlibaba GroupAllianzAllstateAlpha BankAlphabet IncAlstomAltice USAAmazonAmcorAmercoAmérica MóvilAmerican AirlinesAmerican TowerAmeriprise FinancialAmetekAmphenolAnalog DevicesAnglo AmericanAonApollo Global ManagementAppleApplied MaterialsAptivAramarkAramcoArcelorMittalArcher Daniels MidlandArkemaArrow ElectronicsAsahi Group HoldingsAsahi KaseiAsian PaintsASML HoldingAssa AbloyAstellas PharmaAstraZenecaAT&TAtlas CopcoAtlassianAutodeskAutoNationAutoZoneAXABAIC MotorBaiduBaker HughesBank of AmericaBank of BarodaBank of ChinaBank of MontrealBank of TianjinBankinterBarclaysBarrick GoldBASFBausch Health CompaniesBaxterBayerBBVABecton DickinsonBeiersdorf AGBerkshire HathawayBest BuyBHPBlackRockBlackstoneBlock Inc.,Bluescope SteelBMWBNP ParibasBoeingBooking HoldingsBorgWarnerBoston ScientificBouyguesBPBrenntagBridgestoneBristol Myers SquibbBritish American TobaccoBroadcomBrookfield Asset ManagementBrown-FormanBT GroupBuilders FirstSourceBungeBunzlBYDCampbell SoupCanadian TireCanara BankCanonCapgeminiCapital OneCardinal HealthCarnival CorporationCarrefourCarrier GlobalCBRECDW CorporationCelaneseCellnex TelecomCemexCenteneCentricaCGICharoen Pokphand FoodsCharter CommunicationsChevron CorporationChina MobileChipotle Mexican GrillChow Tai Fook JewelleryChubbCiscoCitigroupCME Group
CMS EnergyCNH IndustrialCNPC CapitalCoca-ColaCognizantColgate-PalmoliveComcast CorporationComericaCommercial Bank of QatarCommerzbankCompal ElectronicsCompass GroupConagra BrandsConcordia Financial GroupConocoPhillipsConstellation BrandsContinentalCortevaCosco ShippingCostco WholesaleCovestroCRHCrowdStrikeCSC FinancialCSLCSXCumminsDai-ichi LifeDaiichi SankyoDaikinDaimler TruckDanaherDanoneDanske BankDarden RestaurantsDellDelta Air LinesDelta ElectronicsDensoDentsuDeutsche BankDeutsche LufthansaDeutsche TelekomDexComDiageoDollar GeneralDollar TreeDoosanDoverDowDSVDuPontDXC TechnologyE.ONEatoneBayEcolabElectronic ArtsElevance HealthEli LillyEmaar PropertiesEmeraEmerson ElectricEmpire Company LimitedEnbridgeEnBWEnelENEOS HoldingsENGIEEniENN Natural GasEntergyEQTEquitable HoldingsEricssonEssilorLuxotticaEssityEstee Lauder CompaniesEurofins Scientific Societe EuropeenneExelon CorporationExpedia GroupExpeditors InternationalExperianExxonMobilFacebookFalabellaFedExFemsaFerrariFerrovialFirstRandFiservFlex LtdFlutter EntertainmentFMCFordFortiveFox CorporationFreeport-McMoRanFreseniusFujifilm HoldingsFujitsuGarminGazpromGeneral DynamicsGeneral ElectricGeneral MillsGeneral MotorsGenuine Parts CompanyGilead SciencesGlencoreGlobal PaymentsGoertek Inc.Goodman GroupGoodyear Tire & Rubber CompanyGoogleGrupo BimboGSKGuotai Junan SecuritiesHaierHalliburtonHalyk BankHanwhaHCA HealthcareHCL TechnologiesHDFC BankHenkelHess CorporationHewlett Packard EnterpriseHewlett-PackardHexagon ABHikvisionHitachiHNA TechnologyHoa Phat GroupHokuhoku Financial GroupHolcimHologicHon Hai PrecisionHondaHoneywellHong Leong FinancialHOYA CorporationHSBCHuntington BankHyundai
IberdrolaICICI BankIllinois Tool WorksIlluminaImperial BrandsInfosysIngersoll RandInpexIntelIntercontinental ExchangeIntesa SanpaoloIntuitInvescoInvestecIQVIAItochuJardine MathesonJefferiesJohn DeereJohnson Controls InternationalJPMorgan ChaseKakaoKelloggKeringKeurig Dr PepperKeysight TechnologiesKIAKimberly-ClarkKingspan GroupKohl’s CorporationKohlberg Kravis RobertsKoneKoninklijke KPN N.V.Kraft Heinz CompanyKrogerKuwait Finance HouseL3HarrisLabCorpLas Vegas SandsLegrandLenovoLeonardoLGLiberty GlobalLiberty Media CorporationList of Top 2000 CompaniesLive Nation EntertainmentLockheed MartinLouis VuittonLukOilLyondellBasell IndustriesM&GMacquarie GroupMacy’sMagna InternationalManulifeMarriott InternationalMarsh McLennanMartin Marietta MaterialsMarubeniMastercardMazda MotorMcDonald’sMcKessonMediobancaMedipal HoldingsMedtronicMercedes-Benz GroupMetLifeMichelinMicron TechnologyMicrosoftMitsubishiMitsui & Co.Mizuho Financial GroupMolson CoorsMondelez InternationalMonster BeverageMorgan StanleyMotorola SolutionsNASDAQNational GridNatWest GroupNestléNetflixNew Hope LiuheNewmontNextEra EnergyNidecNintendoNissan MotorNokiaNomura HoldingsNorthern TrustNorthrop GrummanNovartisNovo NordiskNRG EnergyNucorNvidiaNVR, Inc.NXP SemiconductorsOccidental PetroleumOld MutualOmnicom GroupOracleOrganonOrix CorporationOwens CorningPaccarPalo Alto NetworksPanasonicParamountParker-HannifinPayPalPBF EnergyPegatronPernod RicardPetronas ChemicalsPhilip Morris InternationalPhilipsPNCPoste ItalianePPGPrincipal Financial GroupProcter & GambleProgressivePrudentialPublicis GroupePunjab National BankQualcommQuanta ServicesRaiffeisen Bank InternationalRakutenRaymond JamesRaytheon TechnologiesReckittReinsurance Group of AmericaReliance Industries LimitedRenaultRepsolRestaurant Brands InternationalRexelRichemontRio TintoRocket Companies
Rockwell AutomationRogers CommunicationsRolls-Royce HoldingsRosneftRoyal Bank of CanadaRoyal Caribbean GroupS&P GlobalSafranSalesforceSamhallsbyggnadsbolaget I NordenSamsungSandvikSanofiSantanderSAPSBI HoldingsSchindler HoldingSchlumbergerSchneider ElectricSchrodersScotiabankSempraSeven & I HoldingsShell Company ProfileSherwin-WilliamsShinsei BankSibanye StillwaterSiemensSK HynixSM InvestmentsSnapSociete GeneraleSodexoSoftBank GroupSonySouthwest AirlinesSS&C TechnologiesStandard CharteredStanley Black & DeckerStarbucksState StreetStellantisSumitomoSun Pharma IndustriesSuzuki MotorSwatch GroupSwiss ReSynopsysTaiwan SemiconductorTarga ResourcesTargetTata MotorsTata SteelTatneftTBEATC EnergyTCLTD Bank GroupTD Synnex CorporationTE ConnectivityTech MahindraTechtronic IndustriesTelefónicaTeleperformanceTelstraTELUSTencent HoldingsTenet HealthcareTescoTeslaTeva PharmaceuticalTexas InstrumentsTextron Inc.ThalesThe HartfordThe Walt Disney CompanyThomson ReutersThyssenKrupp GroupTJX CompaniesTokio Marine HoldingsTongweiToshibaTotalEnergiesToyotaTransDigm GroupTransneftTransurban GroupTwitterTyson FoodsUBSUniCreditUnileverUnited Parcel ServiceUS BancorpUS FoodsUsiminasVeolia EnvironnementVerizonVestasViatrisVINCIVirgin Money UKVisa IncVivendiVodafoneVolkswagenVolvo GroupWabtec CorporationWalgreensWalmartWarner Bros. DiscoveryWelltowerWens Foodstuff GroupWesfarmersWest Fraser Timber Co.West Japan Railway CompanyWest Pharmaceutical ServicesWestern Alliance BancorpWestern DigitalWestlake ChemicalWestpacWhirlpoolWillis Towers WatsonWilmar InternationalWiproWolters KluwerWoodside EnergyWoolworthsWoori Financial GroupWorkdayWorld Fuel ServicesWPG HoldingsWPPWuxi ApptecXiaomiYamaha MotorYum BrandsYum China HoldingsZalandoZimmer BiometZoom Video CommunicationsZoomlion Heavy IndustryZTE CorporationZurich Insurance Group
Call us: +31 (0)20 705 2360