Stephen Duprey is a prominent figure in New Hampshire Republican politics and a Republican National Committee member from Concord, New Hampshire.

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In 1972, Duprey was elected to the New Hampshire Legislature and became the country's youngest state representative at age 19.^[1] Duprey later served as chair of the New Hampshire Republican Party for four terms between 1992 and 1995, and 1997–2001.^[2] In January 2020, he resigned after being defeated by Hillsborough County Republican Chair and conservative activist Chris Ager.^[3] Duprey and his wife, Susan Duprey have participated in 30 campaigns since 1970.^[4]

A moderate Republican, Duprey supports legalized abortion.^[3] He endorsed Joe Biden for President of the United States in the 2020 General Election.^[5]

Duprey is a graduate of Cornell Law School. His wife Susan Duprey is a graduate of Northeastern University School of Law. They have three children.

In 2010, Duprey was named business leader of the year by the Greater Concord Chamber of Congress.^[6]