Dyachenko is a Ukrainian surname. Notable people with the surname include:
Alexsandr Dyachenko, Kazakh cyclist for Astana TeamAlexander Dyachenko, Russian sprint canoerAlexandr Dyachenko, Kazakh beach volleyball playerIgor Dyachenko, Ukrainian karatekaMaryna Dyachenko, Ukrainian sci-fi writerPetro Dyachenko, Ukrainian military commanderRod Dyachenko, Russian soccer playerSerhiy Dyachenko (writer), Ukrainian sci-fi writerTatyana Dyachenko, daughter of Boris Yeltsin