Jean Mercier may refer to:
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Jean Mercier (engineer) (1901–1971), French engineer
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Jean Le Mercier (died 1397), French politician, advisor to kings Charles V and Charles VI
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Jean Mercier (Hebraist) (died 1570), French Hebraist
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Jean Ernest Mercier (1840–1907), French translator, historian and politician
See also
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Jean Mercer (fl. 1950s–2010s), American developmental psychologist and professor
{{hndis, Mercier, Jean