John Richard "Johnny" Letts (born 1943 in Adelaide, South Australia) is a former Australian jockey whose career spanned almost 30 years, retiring from race riding in 1988.
Letts began riding as an apprentice in 1959, aged 16 years old and eventually rode over 2,300 winners.
He also had success in the 1977 AJC Epsom Handicap on Raffindale, the 1975 Victoria Derby on Galena Boy and the 1980 VRC Australian Cup on Ming Dynasty.
In recent years, Letts has been prominent as a mounted interviewer for 7 Sport's TV coverage of major races in Australia, including the Melbourne Cup.
In April 2015, Letts lost his best friend Banjo, who died from colic aged 25.