Alec Nathan Wildenstein (August 5, 1940 – February 18, 2008) was a French-born American billionaire businessman, art dealer, racehorse owner, and breeder.
Born in Marseille, Wildenstein was raised in New York City where his family owned and operated an art gallery.
Upon his father's death in 2001, Alec Wildenstein inherited half of a business empire[2] estimated at US$10 billion and included what was believed to be the world's largest private collection of major works of art.
His Ecurie Wildenstein racing stable hired Élie Lellouche and Dominique Sepulchre to train his flat horses, and Jean-Paul Gallorini and Marcel Rolland for his steeplechase runners.
They had a daughter, Diane, followed by a son, Alec Jr. Their divorce proceedings between 1997 and 1999 gained wide media coverage for revelations about the couple's extravagant spending habits and the pressure he put on Jocelyne Wildenstein to undergo plastic surgery.