Zdeněk Štybar (Czech pronunciation: [ˈzdɛɲɛk ˈʃtɪbar]; born 11 December 1985) is a Czech former professional cyclist, who rode professionally in cyclo-cross and road bicycle racing between 2005 and 2024 for Telenet–Fidea, the Quick-Step Alpha Vinyl Team and Team Jayco–AlUla.

In the early part of his career, Štybar prioritised competing in cyclo-cross, where he won three world titles – in 2010, 2011 and 2014 – as well as six consecutive national titles and overall victories in both the 2009–10 UCI Cyclo-cross World Cup and the 2009–10 Cyclo-cross Superprestige. Signing for Quick-Step in 2011, Štybar competed more readily in road racing, ultimately winning Grand Tour stages at the 2013 Vuelta a España and the 2015 Tour de France, the Czech National Road Race Championships in 2014 and 2017, and multiple one-day races. Over his professional career, Štybar took more than 60 victories across both disciplines.