Arsène Lupin is a fictional gentleman thief and master of disguise created in 1905 by French writer Maurice Leblanc. The character was first introduced in a series of short stories serialized in the magazine Je sais tout. The first story, "The Arrest of Arsène Lupin", was published on 15 July 1905.

A gentleman thief, gentleman burglar, lady thief, or phantom thief is a stock character in fiction. A gentleman or lady thief is characterised by impeccable manners, charm, courtesy, and the avoidance of physical force or intimidation to steal, and often has inherited wealth. They steal not only to gain material wealth but also for the thrill of the act itself, which is often combined in fiction with correcting a moral wrong, selecting wealthy targets, or stealing only particularly rare or challenging objects.