Frantz Charlet was a Belgian painter, etcher, and lithographer.
An Impressionist, he was one of the founding members of the group Les XX. He studied at the Académie Royale des Beaux-Arts in Brussels from 1872 until 1873 and again from 1876 to 1881; among his fellow pupils there were Eugène Broerman, François-Joseph Halkett, Théo van Rysselberghe and Rodolphe Wytsman, and his teacher was Jean-François Portaels.