Sharyinsky District (Russian: Шарьи́нский райо́н) is an administrative[1] and municipal[5] district (raion), one of the twenty-four in Kostroma Oblast, Russia.

The area of the district is 4,070 square kilometers (1,570 sq mi).

[9] Within the framework of administrative divisions, Sharyinsky District is one of the twenty-four in the oblast.

[1] The town of Sharya serves as its administrative center, despite being incorporated separately as a town of oblast significance—an administrative unit with the status equal to that of the districts.

[5] The town of oblast significance of Sharya is incorporated separately from the district as Sharya Urban Okrug.