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Marsh McLennan at COP29

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Marsh McLennan is the world’s leading professional services firm in risk, strategy and people.
We bring together experts from across our four global businesses — Marsh, Guy Carpenter, Mercer and Oliver Wyman — to help make organizations more successful and societies more resilient
Marsh McLennan is the world’s leading professional services firm in risk, strategy and people. We bring together experts from across our four global businesses — Marsh, Guy Carpenter, Mercer and Oliver Wyman — to help make organizations more successful and societies more resilient.


We operate in 130 countries
We were founded in 1871
We have more than 85,000 global experts

 
We are a company of ideas and ideals.
With more than 85,000 colleagues based all over the world, our shared purpose — to build the confidence to thrive through the power of perspective — has never been more important or more relevant. We are in business to expand what’s possible for our clients and for each other.