The flat racing Champion Jockey and Champion Apprentice titles are awarded annually to the jockey(s) and apprentice(s) respectively that have ridden the most winners (both turf and all-weather) in Great Britain during a set period or championship season. The set period has varied over time, originally covering the calendar year when all flat racing was held on turf between March and November. Later, all-weather races outside the turf season were excluded, and from 2015 the championship season was further shortened to exclude the start and end of the turf season.