Yaroslav Popovych (Ukrainian: Ярослав Попович; born 4 January 1980) is a Ukrainian former professional cyclist, who rode professionally between 2002 and 2016.

The winner of the under-23 road race at the 2001 UCI Road World Championships, Popovych turned professional in 2002 with Landbouwkrediet–Colnago, where he performed particularly strongly in the Giro d'Italia, finishing third in 2003. Upon joining Discovery Channel in 2005, his focus switched to the Tour de France, where he won the young riders' classification in 2005 and won stage 12 in 2006. When Discovery Channel folded at the end of 2007, Popovych moved to Silence–Lotto in 2008 and on to Astana in 2009. Popovych also raced for Team RadioShack in 2010 and 2011. From 2012 until 2016 he rode with the UCI ProTour team Trek–Segafredo.