Pierre Lemonnier may refer to:
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Pierre Lemonnier (physicist)
Pierre Lemonnier (aka ''Petro Lemonnier'') (28 June 1675 in Saint-Sever – 27 November 1757 in Saint-Germain-en-Laye) was a French astronomer, a professor of Physics and Philosophy at the Collège d'Harcourt (University of Paris), and a mem ...
(1675–1757), French physicist and astronomer
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Pierre Lemonnier (footballer) (born 1993), French footballer
{{hndis, Lemonnier, Pierre