Guy Lefrant (1923–1993) was a French equestrian. He won a silver medal in individual eventing at the 1952 Summer Olympics in Helsinki. He won a bronze medal in team eventing at the 1960 Summer Olympics in Rome, together with Jack le Goff and Jéhan Le Roy.
Janou Lefèbvre (later Tissot, born 14 May 1945) is a retired French equestrian show jumper. She competed at the 1964, 1968 and 1972 Olympics and won team silver medals in 1964 and 1968. She won the individual world title in 1970 as Lefèbvre and in 1974 as Tissot, as she got married and changed her surname in between.