John Doyle
| John Doyle | |
| Nationality | American |
|---|---|
| Occupation | Business executive |
| Known for | CEO of Marsh McLennan |
John Doyle is an American business executive who serves as the chief executive officer of Marsh McLennan, one of the world's largest professional services firms in the areas of risk, strategy, and people. Marsh McLennan operates through its subsidiary businesses, including Marsh, Guy Carpenter, Mercer, and Oliver Wyman. Before ascending to the top leadership role at the parent company, Doyle served as CEO of Marsh, the firm's insurance broking and risk management division, which is among the largest insurance brokerage operations globally. In his capacity as a senior executive, Doyle has been a prominent voice on topics including geopolitical risk, climate-related insurance losses, and broader enterprise risk management challenges facing businesses worldwide.[1]
Career
Marsh and Marsh McLennan
John Doyle built his career within the insurance and risk management industry, rising through the ranks to occupy the most senior leadership positions at Marsh McLennan, a global professional services firm. Marsh McLennan is the parent company of Marsh, one of the world's largest insurance brokers; Guy Carpenter, a reinsurance intermediary; Mercer, a human resources and investment consulting firm; and Oliver Wyman, a management consulting firm.
Doyle served as president and CEO of Marsh, the insurance broking and risk management subsidiary, before being elevated to the role of CEO of the broader Marsh McLennan organization. In this role, he oversees the strategic direction of the entire enterprise and its diverse portfolio of professional services businesses.
Public Commentary on Risk and Business
As the leader of one of the world's foremost risk advisory firms, Doyle has been an active participant in public discussions regarding the most pressing risks facing businesses and societies. In January 2026, Doyle spoke with the Wall Street Journal Leadership Institute, where he outlined what he identified as the most significant risks of 2026. During the conversation, he discussed the intersection of geopolitics, climate-related insurance losses, and evolving risk landscapes that affect businesses across industries and geographies.[1] His commentary reflected the broad scope of Marsh McLennan's advisory work, which encompasses political risk, environmental risk, cybersecurity risk, and financial risk, among other domains.
Doyle's public remarks have positioned him as a notable voice in conversations about how corporations and governments should prepare for and respond to complex, interconnected global threats. The breadth of risks he has addressed — from climate change to geopolitical instability — mirrors the multidisciplinary nature of Marsh McLennan's operations, which span insurance placement, reinsurance, investment consulting, and strategic advisory services.
Recognition
As CEO of Marsh McLennan, John Doyle leads a firm that is consistently ranked among the largest and most influential in the global insurance and professional services industries. Marsh McLennan is a constituent of the Fortune 500 and maintains operations in more than 130 countries. Doyle's leadership of this organization places him among the most prominent executives in the insurance and risk management sector. His appearances in major business media, including the Wall Street Journal and Yahoo Finance, reflect his standing as a recognized authority on enterprise risk and corporate strategy.[1]
References
- ↑ 1.0 1.1 1.2 "Marsh CEO John Doyle Lays Out the Biggest Risks of 2026".Yahoo Finance.January 2026.https://finance.yahoo.com/video/marsh-mclennan-ceo-john-doyle-212200870.html.Retrieved 2026-02-24.
Notes
This article covers John Doyle, the American business executive who serves as CEO of Marsh McLennan. He should not be confused with other notable individuals of the same name, including the Tony Award-winning theater director John Doyle, or the former U.S. men's national soccer team player John Doyle.