Rikki Belder (born 2 July 1993) is a former Australian track sprint cyclist. She was the 2017 Oceania Champion in the 500m Team Sprint (with Holly Takos and Courtney Field), and has won six Australian Titles in the same event with fellow South Australian team members Anna Meares OAM and Stephanie Morton OAM.

Belder holds the Australian Championship Record in the 500m Team Sprint (with Stephanie Morton). She represented Australia at the 2015 Union Cycliste Internationale – UCI Track Cycling World Cup III in Cali, Colombia, and at the 2017 Oceania Track Cycling Championships.
Rikki Belder was born in Adelaide, South Australia on 2 July 1993. She was a scholarship holder at the South Australian Sports Institute (SASI) from 2011 - 2017. Belder studied Biomedical Engineering at Flinders University.
She is the daughter of Lyn and Gary Belder. Sister Donna Belder, held a PhD research scholarship in ornithology at the Fenner School of Environment and Society, Australian National University (ANU).
In 2014, Rikki Belder was listed as one of South Australia's Fastest-Rising Stars Under 30. Belder has completed some art work for charity.

2013
2012
Belder was a GKA Sports Distribution (https://www.gkasports.com.au) supported athlete.