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.
In January 2018, Nappier announced she would not seek re-election to a sixth term in November 2018.