Letendre or Le Tendre is a surname of French origin, meaning "young man". Notable people with the surname include:

Donald E. Letendre (born 1953), American professor and pharmacist Eugène Letendre (1931–2014), French racing cyclist Linell Letendre ( 1996–present), American brigadier general Pascale Letendre (born 1980), Canadian curler Rita Letendre (1928–2021), Canadian painter, muralist and printmaker Serge Le Tendre (born 1946), French comics writer

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