Maurice Emmanuel Lansyer was a French realist landscape painter.

He completed his secondary studies in Nantes where he awoke his interest in drawing, despite the opposition of his father who wanted him to train as a notary. After finishing his studies, he moved to Châteauroux where he lived for two years with a cousin architect.In 1857 he began taking architecture classes at Eugène Viollet-le-Duc's studio. In 1860 he began artistic and painting studies and from 1861 he entered the studio of the painter Gustave Courbet. In 1862 he was admitted to the studio of Henri Harpignies, in Cernay-la-Ville (less than 50 km from Paris). The following year, his painting Un poste au bordit was well received by the press.

In 1889 he received the orders of the French state and the town of Paris. He participated in exhibitions held by the Société des Amis des Arts. In 1865 he received the medal of the Salon des Artistes Français and his name began to stand out. In 1872 he sold 55 fabrics without intermediaries at the Hôtel Drouot auctions and in 1875 another 59. He signed agreements with the state and the city of Paris to design views, landscapes and tapestries for the city ​​hall of Paris, the Luxembourg Palace, among other points of interest.

In 1881 he received the Legion of Honor in the rank of Knight and between that year and 1891 he was a member of the jury of the Salon des Artistes Français. In 1899 he signed public contracts to carry out work at the Universal Exhibition of Paris in 1899. Was a great traveler and art collector.

He died in Paris in 1893, at the age of 58. He is buried in the Loches cemetery.