picador - the horseman who pricks the bull with a lance early in the bullfight to goad the bull and to make it keep its head low

broncobuster, buster - a person who breaks horses

fox hunter - a mounted hunter who follows the hounds in pursuit of a fox

horsewoman - a woman horseman

jockey - someone employed to ride horses in horse races

postilion, postillion - someone who rides the near horse of a pair in order to guide the horses pulling a carriage (especially a carriage without a coachman)

rider - a traveler who actively rides an animal (as a horse or camel)

roughrider - a horseman skilled at breaking wild horses to the saddle