Mark Landis is an American art forger known for creating and selling fake artworks. He gained notoriety for his elaborate schemes, where he would replicate famous pieces and donate them to various museums across the United States. His forgeries often went undetected for years, leading to significant confusion in the art community. Landis's activities came to light in 2010 when he was exposed by a museum curator. His story highlights issues related to art authenticity and the challenges faced by institutions in verifying the provenance of artworks. Landis's case has since become a cautionary tale in the world of art and collecting.