Viktor Fyodorovich Markin (Russian: Виктор Фёдорович Маркин; born 23 February 1957 in the village of Oktyabrsky, Ust-Tarksky District, Novosibirsk Oblast[1]) is a former Soviet athlete, winner of two gold medals at the 1980 Summer Olympics.

Markin captured his second gold in the 4 × 400 m relay when, as an anchor, he outran the winner of the 400 metre hurdles, East German Volker Beck.

After a break from sports to complete his studies in medicine, Markin returned at the European Championships in 1982, where he won two bronze medals (400 m and 4 × 400 m relay).

At the inaugural World Championships in Helsinki Markin, the only Soviet competing in the individual 400 metres (as the rest were concentrating on the relay), was knocked out of the final in an extremely close photo finish by eventual bronze medalist Sunder Nix of the United States.

West Germany already lost their winning chances on the first leg as Erwin Skamrahl (who had broken Markin's European record just three weeks earlier) gave up more than ten meters to Sergey Lovachov; the other main favorites, United States, hung with the Soviets for two and a half legs until Willie Smith tumbled and fell, leaving Markin an easy job to anchor home a USSR victory.