Fedir Trofymovych Dyachenko (Ukrainian: ????? ?????????? ???????; (16 June 1917 – 8 August 1995), was a Ukrainian Soviet sniper during World War II, credited with as many as 425 kills.
He was born in the village of Velyki Krynky, now part of Hlobyne Raion of Poltava Oblast.
Dyachenko was one of the most effective snipers in the Red Army during World War II.
He was granted the status of Hero of the Soviet Union in 1944.
He retired from the Soviet Army in 1962 with the rank of Major.
He lived in Leningrad, working as a senior engineer at the Kirov Plant.
Dyachenko died on 8 August 1995 and is buried in the city's Kovalevsky Cemetery.