Nicolas Roche (; born 3 July 1984) is an Irish cyclist, who competes in gravel cycling for his own NR GRVL team. He is also a former professional road bicycle racer, who rode professionally between 2005 and 2021 for seven different teams.

During his professional road racing career, Roche took twelve victories, including four titles at the Irish National Cycling Championships – two each in the road race and the time trial – and stage victories at the Vuelta a España in 2013 and 2015. He started a total of 24 Grand Tours, finishing 22, and he took a total of 65 top-10 finishes in Grand Tour stages, including 43 at the Vuelta a España (where he recorded a pair of top-10 overall finishes). He represented Ireland at the Olympics on four occasions between 2008 and 2020, and represented Ireland at the UCI Road World Championships eleven times between 2006 and 2020.

Since retiring from road cycling at the end of the 2021 season, Roche has worked as a directeur sportif for UCI Continental team Trinity Racing and as a commentator for the international television feed at the Tour de France alongside Anthony McCrossan.