Henriette Ragon (10 June 1918 – 30 April 2015), better known as Patachou, was a French singer and actress. She was an Officier of the Légion d'honneur.

Born in the 12th arrondissement of Paris, Henriette Ragon began her working life as a typist, then a factory worker, a shoeseller and an antique dealer. In 1948, with her husband Jean Billon she took over a cabaret-restaurant in Montmartre, called Patachou. (Their son Pierre Billon had some success as a singer in the 1970s and wrote J'ai oublié de vivre for Johnny Hallyday.