Jean Sicard can refer to:
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Jean Sicard (composer) (later 17th century – early 18th century), a French singer and composer of 17 books of ''airs''
* Jean Sicard, known as
Yann Brekilien Jean Sicard (11 December 1920, Paris – 12 March 2009), known as Yann Brekilien, was a Brittany, Breton writer. Fighting in the French Resistance from 1941, he founded a secret journal with the Dupouy brothers and the sons of the bâtonnier Arrighi ...
(1920–2008), a Breton writer and member of the French Resistance
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Jean-Athanase Sicard
Jean-Athanase Sicard (23 June 1872 – 28 January 1929) was a French neurologist and radiologist born in Marseille.
He studied medicine in Marseille and Paris, where he studied with Charles Emile Troisier (1844-1919), Édouard Brissaud (1852-1909 ...
(1872–1929), a French neurologist and radiologist
{{hndis, name=Sicard, Jean