Le Cunff or Le Cun is a Breton surname meaning "the gentle", "the affable", or "the debonnaire".
Similarly to the surnames Gourcuff and Henaff, the digraph -ff was used in Middle Breton orthography to indicate a nasalized vowel. In many modern branches of the family, this spelling has been simplified to a single "n". The root kuñv (or kunv) remains a common adjective in modern Breton for someone of a mild or conciliatory temperament.
Individuals with the surname include:
Anne-Laure Le Cunff (born 1990), French neuroscientist, author, and entrepreneur. Kévin Le Cunff (born 1988), French para-cyclist and multiple Paralympic gold medalist. , French molecular biology and genetics engineer at (1915–1991), French journalist and writer specializing in maritime and Breton culture. Yann LeCun (born 1960), born Yann Le Cun, French computer scientist and Turing Award winner. Armel Le Cunff, Canadian aviator and operator of Stoney Point (Le Cunff) Airport
Places Stoney Point (Le Cunff) Airport, a registered aerodrome (TC LID: CRML) in Stoney Point, Ontario, Canada
See also Gourcuff, a surname sharing the same root (gour meaning "man").