David Duffield

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2026-06-25

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David Arthur Duffield (born 21 September 1940) is an American billionaire businessman in the software industry. He is the co-founder and former chairman of PeopleSoft, and co-founder and CEO emeritus of Workday, Inc.. In addition, he is founder and co-CEO of Ridgeline, Inc. Duffield has donated more than $500 million to his alma mater Cornell University, including a series of donations in the 2020s totaling over $400 million. As a result, the university renamed its College of Engineering after