Aon Competitors and Similar CompaniesClear all
Aon's competitors and similar companies include Marsh, Gallagher and JLT Group Holdings.
 Aon Aon is a company specializing in risk management, insurance brokerage, and human capital consulting. |  Marsh Marsh & McLennan is a professional services firm offering advice and solutions in the areas of risk, reinsurance and capital, people and investments, and management consulting. |  Gallagher Gallagher (also known as Arthur J. Gallagher & Co.) is a company that specializes in insurance brokerage, risk management, and HR benefits consulting. |  JLT Group Holdings JLT Group Holdings (formerly known as Jardine Lloyd Thompson Group) is a multinational corporation providing insurance, reinsurance, and employee benefits-related advice services. | |
Founding Date | Founding Date 1982 | Founding Date 1871 | Founding Date 1927 | Founding Date 1997 |
Type | Type Public | Type Public | Type Public | Type Subsidiary |
Tags | ||||
Locations | Locations London, GB HQ Belas, AO Buenos Aires, AR Buenos Aires, AR Córdoba, AR Mar Del Plata, AR Neuquén, AR see more | Locations New York, US HQ Adelaide, AU Barangaroo, AU Brisbane City, AU Cairns City, AU Canberra, AU Docklands, AU see more | Locations Rolling Meadows, US HQ Saint John's, AG Darwin City, AU Dubbo, AU East Melbourne, AU Hobart, AU Lake Macquarie, AU see more | Locations London, GB HQ Lancing, GB |
Employees | Employees 60,000 | Employees 95,0006% increase | Employees 56,0008% increase | Employees 4,0811% increase |
Valuation ($) | Valuation ($) 80.2 b | Valuation ($) 109 b | Valuation ($) 62.8 b | Valuation ($) N/A |
Financial | ||||
Revenue (est.) | Revenue (est.) $17.2b (FY, 2025) | Revenue (est.) $27b (FY, 2025) | Revenue (est.) $13.9b (FY, 2025) | Revenue (est.) £1.5b (FY, 2018) |
Net income | Net income $3.8b (FY, 2025) | Net income $4.2b (FY, 2025) | Net income $1.5b (FY, 2025) | Net income £54.3m (FY, 2018) |
Operating ⚠ | ||||
Countries | Countries 120 (FY, 2022) | Countries 130 (Q1, 2024) | Countries N/A | Countries 135 (FY, 2017) |
For sources of this data, please see the company profile
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Marsh
HQ
New York, US
Employees
95,000↑ 6% increase
Marsh & McLennan is a professional services firm offering advice and solutions in the areas of risk, reinsurance and capital, people and investments, and management consulting.
View companyGallagher
HQ
Rolling Meadows, US
Employees
56,000↑ 8% increase
Gallagher (also known as Arthur J. Gallagher & Co.) is a company that specializes in insurance brokerage, risk management, and HR benefits consulting.
View companyJLT Group Holdings
HQ
London, GB
JLT Group Holdings (formerly known as Jardine Lloyd Thompson Group) is a multinational corporation providing insurance, reinsurance, and employee benefits-related advice services.
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