Henry Ellsworth Parker (February 14, 1928 – September 29, 2018) was an American politician who served as Connecticut State Treasurer from 1975 to 1986. These 11 years represented the office's second-longest modern tenure, surpassed only by Denise Nappier's 20 years in the office. Parker was the second African American to be elected treasurer in Connecticut, after Gerald Lamb. Since Parker ran in 1974, the Democratic Party has always nominated an African American for state treasurer. Parker also ran three times for New Haven mayor in 1969, 1971, and 1979.