Marsh & McLennan Headquarters Address, IR Email, Media Relations Email and Contact Info

Marsh & McLennan Companies, Inc. is a leading professional services firm with global presence. The headquarters of Marsh & McLennan Companies, Inc is based out in New York City. The major business of company involve businesses in insurance brokerage, talent management, investment advisory, risk management, reinsurance services and last but not the least management consulting.

The company was founded in the year 1905 and Mr. Dan S. Glaser is currently serving as President and CEO of the company. Let’s explore the contact information of Marsh & McLennan like its headquarters address, phone number, Media Relations contacts, Investor Relations contacts, HR contacts and more.

Marsh & McLennan Headquarters Address and Phone Number

The Corporate Headquarters of Marsh & McLennan is established in New York, here are the full address details, please note it down: Marsh & McLennan Companies, Inc., 1166 Avenue of the Americas, New York, NY 10036.

If you have a concern that requires Higher level Management’s discretion or approval, you can use the above mentioned address to share it with the concerned authorities. If you are planning a visit to their office, similar address details can be used. (prior appointment is suggested).

You may also speak to the authorities at headquarters at the Corporate Office Phone: +1 212 345 5000.

Media Relations Email and Phone

For Media Inquiries and Requests, you can get in touch with Amelia Woltering (Global Director of Media Relations) on phone: +1 212 345 0864 or through email: The given contacts are for use of Media professionals only and only media related queries will be entertained.

Investor Relations Email and Phone

For investment related inquiries or requests, please get in touch with Sarah DeWitt (Head of Investor Relations) on phone: +1 212 345 6750 or through email: Please note that non investment inquiries will not be entertained at the given contacts.

HR Email Address

For HR requests or inquiries please get in the touch with Marsh & McLennan HR at their email:


There are four companies connected with Marsh & McLennan for carrying out the operations are Marsh, Mercer, Guy Carpenter and Oliver Wyman Group. Marsh & McLennan stocks are listed at NYSE under stock name MMC.