Peter L. Larson

Peter Lars Larson (born 1952) is an American fossil dealer who is head of the Black Hills Institute of Geological Research, which specialises in the excavation and preparation of fossils. He led the team that excavated "Sue", one of the largest and most complete specimens of Tyrannosaurus rex, which was the subject of a legal dispute resulting in its seizure and public auction. In 1996, Larson was convicted of customs violations related to failing to declare money he had brought from overseas, and served 18 months in prison.

He has published scientific and popular works on dinosaur paleontology. Larson has been criticized by some paleontologists for his commercial enterprises and support of private collections.