Rebecca Petch (born 9 July 1998) is a New Zealand cyclist who competes in BMX Racing and track cycling.

At the UCI BMX World Championships she came 15th at Rock Hill in 2017, she finished 11th in Baku in 2018, and 25th in Heusden-Zolder in 2019.

[4] On 17 June 2021, Petch was selected in her country's Olympic squad as New Zealand's sole BMX rider for the delayed Tokyo 2020 Summer Games.

[5] Petch was a gold medalist at the 2022 Commonwealth Games in the Women’s Team sprint competition.

[7] She raced as part of the New Zealand team sprint side that contested the UCI Nations Cup in Hong Kong in March 2024.