Loes Gunnewijk (born 27 November 1980 in Groenlo) is a former professional Dutch racing cyclist.
She was part of the 2007 Team Flexpoint.
Gunnewijk was a member of the Dutch national team together with Ellen van Dijk, Marianne Vos and Annemiek van Vleuten in the road race at the 2012 Summer Olympics where Vos won the gold medal.
Gunnewijk announced her retirement from the sport in May 2015, subsequently completing the Union Cycliste Internationale's Sports Directors Diploma course in November 2015.
Between May and the end of 2016, Gunnewijk joined her old cycling team Orica–AIS as a trainee directeur sportif.
Since 2017, Loes has been the head junior women's coach and assistant para-cycling coach for the Dutch cycling national federation KNWU.