Mezhevskoy District () is an administrative and municipal district (raion), one of the twenty-four in Kostroma Oblast, Russia. It is located in the north of the oblast. The area of the district is . Its administrative center is the rural locality (a selo) of Georgiyevskoye. Population: 5,851 (2002 Census); The population of Georgiyevskoye accounts for 56.3% of the district's total population.