Louis Maillard may refer to:
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Louis Maillard (astronomer) (1867–1938), French-born Swiss astronomer
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Louis Camille Maillard
Louis Camille Maillard ( ; ; 4 February 1878 – 12 May 1936) was a French physician and chemist. He made important contributions to the study of kidney disorders. He also became known for the "Maillard reaction", the chemical reaction which he ...
(1878–1936), French physician and chemist
{{hndis, Maillard, Louis