Alain Fabien Maurice Marcel Delon (French: [alɛ̃ dəlɔ̃]; born 8 November 1935) is a French actor and businessman, with French-Swiss dual citizenship since 1999. He rose quickly to stardom, and by the age of 23 was already being compared with French actors such as Gérard Philipe and Jean Marais, as well as American actor James Dean. He was even called the male Brigitte Bardot. Over the course of his career, Delon has worked with many well-known directors, including Luchino Visconti, Jean-Luc Godard, Jean-Pierre Melville, Michelangelo Antonioni and Louis Malle.

Delon acquired Swiss citizenship on September 23, 1999, and the company managing products sold under his name is based in Geneva. He is a citizen of the community of Chêne-Bougeries in the canton of Geneva.