Isidore Laurent Deroy, named also Isidore-Laurent Deroy, Isidore Deroy, Laurent Deroy (14 April 1797 – 25 November 1886) was an french painter from France.
Together with André Chapuy and Louis Le Breton he was the author of numerous series of views of the places they considered the most beautiful in the world.
Son of Jacques Deroy and Aimée Madeleine Pertuisot, Isidore Laurent Deroy was a pupil of the architect Félix and the painter Louis-François Cassas. He made a lot of descriptions and he is the author of a considerable body of work. We owe him French landscapes and animals, drawn, for the most part, in sepia.
He created in 1860 with the Becquet brothers the series France in Miniature.
A tireless lithographer, he reproduced various subjects for the "Amateur's Museum", and published countless views. He went to paint on Lake Como in Lierna, thanks to the friendship of a noble family who had possessions there by the lake.