Sir Ivan Manuel Menezes was an Indian-born British-American business executive. He was the chief executive officer (CEO) of Diageo, a FTSE 100 British multinational alcoholic beverages company, from 2013 until his death in 2023, succeeding Paul S. Walsh.

Diageo plc is a British multinational alcoholic beverage company, with its headquarters in London, England. It operates from 132 sites around the world. It is a major distributor of Scotch whisky and other spirits. Distilleries owned by Diageo produce 40% of all Scotch whisky with over 24 brands, such as Johnnie Walker, J&B and Old Parr.