Louis-Marie Pilet (8 February 1815 – 13 November 1877) was a 19th-century French cellist.

Louis-Marie Pilet studied music in Louis-Pierre Norblin's class[1] at the Conservatoire de Paris where he gained a second prize in 1831 then a first prize in 1834.

[2] Pilet was a cellist in the orchestras of Nantes, London and, in Paris, in the Concerts Valentino [fr], Musard, and Théâtre italien then the Orchestre de l'Opéra national de Paris from 1852.

[2] With Édouard Colonne as second violon and Pierre Adam as violist,[3] he was a member of the Quatuor Lamoureux.

[4] Edgar Degas made his portrait, Le Violoncelliste Pilet [fr], in 1868 and showed him in:The Orchestra at the Opera (L'Orchestre de l'Opéra [fr]), behind bassoonist Désiré Dihau, circa 1870.