On the Record · Aon
Aon competitors, on the record
The companies Aon names as competitors in its annual reports, 2023 to 2025, and the companies that name Aon, each with the sentence and the filing.
Who Aon names
| Company | Named in |
|---|---|
| Arthur J Gallagher & Company | 2025 |
| Lockton Companies, Inc. | 2025 |
| Marsh McLennan | 2025 |
| Willis Towers Watson | 2025 |
In its own words
Arthur J Gallagher & Company, Lockton Companies, Inc., Marsh McLennan, Willis Towers Watson
Word for word“We compete with numerous other global insurance brokers and consulting companies, including, among others, Marsh McLennan, Willis Towers Watson, Arthur J Gallagher & Company, and Lockton Companies, Inc., as well as numerous other global, regional, and local firms in almost every area of our business.” 10-K for 2025
Who names Aon
Companies whose own annual reports name Aon as a competitor.
Word for word“We actively compete with numerous integrated financial services organizations as well as insurance companies and brokers, producer groups, individual insurance agents, investment management firms, independent financial planners and broker-dealers, including public participants, such as Aon plc, Marsh & McLennan Companies, Inc., Willis Towers Watson plc, Arthur J. Gallagher & Co. and Brown & Brown Inc.; private company participants, such as Hub International Limited and USI, Inc.; and in our personal lines business, Goosehead Insurance, Inc. and The Woodlands Financial Group.” 10-K for 2025
Word for word“The human resource consulting market has been traditionally fragmented and a number of large consulting firms, such as AON, Deloitte, McKinsey, Mercer and Willis Towers Watson have built businesses in human resource consulting to serve these needs.” 10-K for 2026
Word for word“Our largest competitors in the pension consulting industry are Mercer HR Consulting (a Marsh & McLennan company) and Aon plc.” 10-K for 2025
Read from Aon’s annual reports (10-K for 2025, 10-K for 2024, 10-K for 2023) and the financial data it files with the SEC, as of 2026-02-13. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.