Eugen Wacker (Russian: Евгений Ваккер, sometimes written as Evgeny Vakker; born 18 April 1974) is a German-born Kyrgyzstani cyclist, who last rode for UCI Continental team Massi–Kuwait Cycling Project. At the 2004 Summer Olympics, he competed in the road race and time trial. In April 2017, he was suspended until February 2018 for testing positive for meldonium.