Denys Kostyuk (born 13 March 1982) is a Ukrainian former professional road bicycle racer, who rode professionally between 2004 and 2016.

During his career, Kostyuk rode for UCI ProTeam Lampre–ISD in 2011 and 2012,[1] and competed in the 2011 Tour de France where he finished in 153rd place.

[2] He is married to triple jumper Olha Saladukha.

[3]