Luigi Loir (22 December 1845 – 9 February 1916) was a French painter, illustrator and lithographer.

Luigi Loir was born in Goritz, Austria.

He was the son of Tancrède Loir François and Thérèse Leban, his wife, respectively valet and housekeeper of the French royal family in exile in Austria.

He realized some drawings for the biscuits brand LU[1] and participated in the battles of Le Bourget during the Franco-Prussian War.

Loir was made a chevalier of the Légion d'honneur in 1898.