Larijan District is a district (bakhsh) in Amol county, Mazandaran Province, Iran. Its administrative center is Rineh. At the 2006 census, its population was 8,089, in 2,406 families. The District has two cities: Rineh and Gazanak. The District has two rural districts (dehestan): Bala Larijan Rural District and Larijan-e Sofla Rural District.