Rhianna Parris-Smith (born 10 July 2002) is an English international track cyclist.
Parris-Smith went to the Hertfordshire Sports College before studying Sport Coaching and Development at the University of Derby.
Parris-Smith was a 100 and 200 metre runner for the Kettering Town Harriers before joining the GB sprint programme in 2023. She then won double gold at the U23 & Junior European Championships (500m time trial & team sprint) in Anadia, Portugal.
At the 2024 British Cycling National Track Championships she won her first national title, after winning the Individual Time Trial Championships.
In October 2025, she made her senior debut in the Track Cycling World Championships in Santiago, where she clinched a silver medal in the team sprint, while riding alongside teammates Emma Finucane and Iona Moir.
At the 2026 European Championships in Konya, Parris-Smith was a member of the British trio who were defeated by Germany in the final of the team sprint.