Denise Lynn Nappier (born June 16, 1951) is an American who served as Connecticut State Treasurer, from 1999 to 2019. A member of the Democratic Party, she was first elected in 1998 and was re-elected in 2002, 2006, 2010 and 2014. She is the first African-American woman elected to statewide office in the history of Connecticut, the first woman elected State Treasurer in Connecticut history, and the first African-American woman elected to serve as state treasurer in the United States. In 2011, she was named to the Connecticut Women's Hall of Fame.