Denis Urubko (Russian: Денис Викторович Урубко, Denis Viktorovitch Ouroubko), born July 29, 1973 in Nevinnomyssk (Russia), is a Russian and Polish mountaineer. He previously held Kazakh nationality from 1991 to 2012.

In 2009, he became the fifteenth person to have climbed all 14 peaks over 8,000m high. In 2006, he won the speed climbing competition on Elbrus in 3 h 55 min 58 s for an ascent from Azau station to the summit, ie 3,250 meters. It arrives almost 40 minutes ahead of the second.