Kosinsky District (; , Köslador rajon) 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.
The Kosa River (a tributary of the Kama) flows through the district.
The district was established on February 23, 1924.
Ethnic composition (as of the 2002 Census):