Timchenko is a surname. Notable people with the surname include:
Dimitriy Timchenko (born 1983), Ukrainian Greco-Roman wrestler
Galina Timchenko (born 1962), Russian journalist
Gennady Timchenko (born 1952), businessman, active in the energy trading
Ilona Timchenko (born 1976), Russian pianist and composer
Oleg Timchenko, contemporary painter and founder of the “10th Floor Group”
Stanislav Timchenko (born 1983), Russian figure skater
