'Tosa jinja (土佐神社) is a Shinto shrine located in the Ichinomiya-shinane neighborhood in the northeastern part of the city of Kōchi, Kochi Prefecture, on the island of Shikoku, Japan. It is the ichinomiya of former Tosa Province. The shrine's main festival is held annually from March 11-13.Several of the shrine structures are designated National Important Cultural Properties. The shrine's Shinane Festival, held on August 25, is known as one of the three major festivals of Tosa.