Peter Collett (8 August 1766 – 27 July 1836) was a Norwegian judge, businessman and property owner. Peter Collett was born at Modum in Buskerud, Norway. He was the eldest son of landowner Peter Collett (1740–1786) and his first wife Kirstine Holmboe (1745–1768). He was a brother of Christian Ancher Collett and Anne Cathrine Collett. He grew up on his father's estate at Buskerud Manor (Buskerud Hovedgård). From 1784 to 1785, Collett attended the Christiania Cathedral School. During 1788, he studied law at the University of Copenhagen.