Kosinsky District is an administrative district (raion) of Komi-Permyak Okrug of Perm Krai, Russia; one of the thirty-three in the krai. Municipally, it is incorporated as Kosinsky Municipal District. It is located in the northwest of the krai. The area of the district is . Its administrative center is the rural locality (a selo) of Kosa. Population: The population of Kosa accounts for 32.9% of the district's total population.