La Troisième Jeunesse de Madame Prune" is a novel written by the French author Pierre Loti, whose real name was Louis-Marie-Julien Viaud. The title of the novel, which translates to "The Third Youth of Madame Prune, " suggests a story that may revolve around the experiences and transformations of the central character, Madame Prune.

Pierre Loti was known for his travelogues and fiction inspired by his own experiences. He often wrote about exotic locations and explored themes of love, nostalgia, and the passage of time.