(21 May 1814 - 1 June 1892) was a French painter and poet.
Janmot was born in Lyon of Catholic parents who were deeply religious. He was extremely moved by the death of his brother in 1823 and his sister's in 1829. He became student at the Royal College of Lyon where he met Frederic Ozanam and other followers of his philosophy professor, Abbe Noirot. In 1831 he was admitted to the École des Beaux-Arts de Lyon and a year later, he won the highest honor, the Golden Laurel. In 1833, he came to Paris to take painting lessons from Victor Orsel and Jean-Auguste-Dominique Ingres. With other Lyon painters, he entered the Society of St. Vincent de Paul. In 1835, he went to Rome with Claudius Lavergne, Jean-Baptiste Frenet and other students and met Hippolyte Flandrin.
After his come back to Lyon in 1836, Janmot would attract the attention of critics of the Salon de Paris in conducting large-scale paintings with religious inspiration such as The Resurrection of the son of the widow of Nain (1839) or Christ in Gethsemane (1840). After 1845, he attracted the interest of Charles Baudelaire with his painting Flower of the Fields that allowed him to access to the Salon of 1846. Theophile Gautier was impressed by his Portrait of Lacordaire (1846). But the failure of his Poem of the Soul at the Universal Exhibition of 1855 disappointed him. In December of that year he married Leonie Saint-Paulet, from a noble family in Carpentras.
In 1856, Janmot obtained a commission to paint a fresco (since destroyed) representing the Last Supper for the church of St. Polycarp. Other orders followed, including the decoration of the dome of the Church of St. Francis de Sales and for the town hall that had been renovated by his friend the architect T. Desjardins. He was then appointed professor at the École des Beaux-Arts.