Oliver Naesen (Dutch pronunciation: ['na?s?n]; born 16 September 1990) is a Belgian professional racing cyclist, who currently rides for UCI WorldTeam AG2R La Mondiale.
Considered a specialist of the one-day classics, he won the 2017 Belgian National Road Race Championships, as well as the Bretagne Classic in 2016 and 2018.
He is the brother of fellow racing cyclist Lawrence Naesen.