Ondřej Cink (Czech pronunciation: [ˈondr̝ɛj ˈtsɪŋk]; born 7 December 1990) is a Czech cross-country mountain biker and road racing cyclist. At the 2012 Summer Olympics, he competed in the Men's cross-country at Hadleigh Farm, finishing in 14th place. He finished in the same position at the 2016 Summer Olympics.

In October 2016 Bahrain–Merida announced that Cink would join them and switch to road racing for the 2017 season. In June 2017, he was named in the startlist for the 2017 Tour de France. Cink returned to mountain biking for the 2018 season, with Primaflor–Mondraker–Rotor. He was on the start list for the 2018 Cross-country European Championship and he finished 10th.