Nicolas Pierre Loir (1624, Paris – 1679, Paris), was a French painter and engraver of religious and historical allegories.

According to the RKD he was a pupil of Sébastien Bourdon and Simon Vouet, who later became a follower of Nicolas Poussin.^[1] He travelled to Italy in the years 1647–1649, and in 1650 was back in Paris.^[1] In 1669 his pupil François de Troy married his sister-in-law, Jeanne Cotelle. Roger de Piles included him in his list of notable French artists, noting that he was the son of a goldsmith and a very good draughtsman.

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