(22 October 1860 - 1926) was a French painter. Like his mentor, William-Adolphe Bouguereau, he was an academic painter and painted realistic portraits as well as mythological and religious scenes. His artistic career was so prestigious that he won the Prix de Rome twice and was awarded the Legion d'honneur.
Lenoir was born in Châtellaillon, a small town just outside of La Rochelle. His mother was a seamstress and his father was a customs officer. When he was young, his father was reassigned and the family moved to Fouras. He did not start out in life as an artist, but instead began his education at a teachers' college in La Rochelle. Upon graduation, he worked as a teacher and supervisor at the lycee in Rochefort.
In August 1883 he was accepted into the École des Beaux-Arts de Paris, he also joined the Academie Julian where he was a student of William-Adolphe Bouguereau and Tony Robert-Fleury. Lenoir made his artistic debut at the Salon in 1887 and continued to exhibit there until his death. He was quickly noticed in the art world, and in 1889 won the Second Prix de Rome for his painting, Jesus et le paralytique (Jesus and a Sick Man with Palsy), and he won the First Prix de Rome the following year for Le Reniement de Saint Pierre (The Denial of St. Peter).His awards did not stop with the Prix de Rome; works shown at the Salons also won prizes, and he received a third-class medal in 1892 for Le Grenier a Vingt Ans (The Garret at twenty years) and a second-class medal in 1896 for La Mort de Sappho (The Death of Sappho).