Robyn de Groot (born 26 December 1982), is a South African cyclist. She raced professionally on the road from 2006 to 2012 and represented South Africa at 4 World Championships, the 2010 Commonwealth Games in Delhi, India, and the 2012 London Summer Olympics. In 2012 she retired from professional road cycling and returned to her profession in Biokinetics. From then on she tried her hand at mountain biking in the marathon discipline with excellent results. In 2014 Robyn successfully defended her XCM national title for the 2nd consecutive year and placed 6th at the World Championships held in Pietermaritzburg, South Africa. In March 2017, De Groot, riding the German Sabine Spitz, finished the Absa Cape Epic in third place. It was de Groot's third Cape Epic: she had finished 2nd in 2015. In September 2019, De Groot placed third in the elite women's race at the UCI Mountain Bike Marathon World Championships held in Grächen, Switzerland.