Lanfranco "Frankie" Dettori, MBE (born December 15, 1970 in Milan) is an Italian thoroughbred race horse jockey and celebrity. He is the son of Sardinian jockey Gianfranco Dettori, who was a prolific winner in Italy.

Dettori's father bought him a palamino pony when he was 12 and he used to practise on it for an hour every night. When he was 13 Dettori left school to become a stable boy and apprentice jockey. The following year he went to Great Britain where he apprenticed with trainer Luca Cumani at Newmarket in 1985 and soon became a stable jockey.

In 1990 Dettori became the first teenager since Lester Piggott to ride 100 winners in one season. His first win came at the age of 16 in Turin in November 1986, while his first in Britain was the following June. Further success followed, with numerous winners in Group 1 races. On September 28, 1996 he achieved the feat of winning all seven races on a single day at Ascot Racecourse.