Eugen Chirnoagă (24 March 1891–June 14, 1965) was a Romanian chemist. Chirnoagă was born in 1891 in Poduri, Bacău County, one of eight children of Gheorghe Chirnoagă, a teacher, and his wife, Olimpia; one of his brothers, Platon Chirnoagă, became a general in World War II. After returning to Romania, he became a professor at the Bucharest Polytechnic. He was elected corresponding member of the Romanian Academy of Sciences (Chemistry section) on 21 December 1935, and became titular member on 3 June 1941.