Eduard Hämäläinen (born 21 January 1969 in Karaganda, Kazakh SSR, Soviet Union) is a retired decathlete from Finland and Belarus.
He originally competed for the Soviet Union and then Belarus after the Soviet dissolution, but changed nationality.
His great-grandfather had moved from Finland to Russia before 1917 and was later deported to Kazakhstan.
During his career he won three silver medals at World Championships.