Charles Baxter Quarterman (born 6 September 1998) is a British former professional cyclist, who competed from 2017 to 2023. After retiring as a professional, he started working for sports equipment manufacturer Salomon.
For the 2017 season he joined the Luxembourg-based team .
He won the Under-23 British National Time Trial Championships in 2019.
In August 2019, Quarterman joined UCI WorldTeam as a stagiaire for the second half of the season, before joining the team permanently in 2020.
Quarterman was educated at the Abingdon School from 2010 to 2017 and is now based near Annecy, France.