Gloria Charmian Duffy is a former U.S. Department of Defense official, businesswoman, social entrepreneur and nonprofit executive. Since 1996, she has been the president, CEO and a member of the Board of Governors of the Commonwealth Club of California, America's largest and oldest public forum, founded in 1903. From 2010 to 2017 she led the acquisition, financing, design, entitlements and construction of the club's first headquarters building, at 110 The Embarcadero in San Francisco. The grand opening for the club's new building took place on September 12, 2017. The building received a 2016 California Heritage Council award for historic preservation.

The Commonwealth Club of California is a non-profit, non-partisan educational organization based in Northern California. Founded in 1903, it is the oldest and largest public affairs forum in the United States. Membership is open to everyone.