Kortkerossky District (Russian: Корткеросский райо́н; Komi: Кӧрткерӧс район, Körtkerös rajon) is an administrative district (raion), one of the twelve in the Komi Republic, Russia.

[citation needed] Its administrative center is the rural locality (a selo) of Kortkeros.

[2] Kortkeros' name was derived from two Komi words, кӧрт ("iron") and керӧс ("mountain").

Based on archaeological evidence and the names of locations (such as Körtyag, Lake Körtty, and the Körtvis River meaning "Iron Pine", "Iron Lake", and "Iron River" respectively), the village of Kortkeros was considered by archaeologists to be an ancient metallurgical centre.

[8] Within the framework of administrative divisions, Kortkerossky District is one of the twelve in the Komi Republic.