| En Name: | Kostromskoy District |
| Ru Name: | Костромской район |
| Image View: | Волга в Костроме - panoramio (1).jpg |
| Image+Caption: | Volga River, Kostromsky District |
| Coordinates: | 57.7667°N 96°W |
| Image Coa: | Coat of Arms of Kostroma rayon (Kostroma oblast).png |
| Federal Subject: | Kostroma Oblast |
| Adm Data As Of: | April 2014 |
| Adm Ctr Type: | city |
| Adm Ctr Name: | Kostroma |
| Selsoviet Type1: | Settlements |
| No Of Selsoviets Type1: | 13 |
| No Of Rural Localities: | 279 |
| Counts Ref: | [1] [2] |
| Mun Data As Of: | March 2014 |
| Mun Formation1: | Kostromskoy Municipal District |
| Mun Formation1 No Of Urban Settlements: | 0 |
| Mun Formation1 No Of Rural Settlements: | 13 |
| Area Km2: | 2032 |
| Pop 2010Census: | 44524 |
| Urban Pop 2010Census: | 0% |
| Rural Pop 2010Census: | 100% |
| Website: | http://admkr.ru/ |
| Date: | August 2011 |
Kostromskoy District (ru|Костромско́й райо́н) is an administrative[3] and municipal[4] district (raion), one of the twenty-four in Kostroma Oblast, Russia. It is located in the southwest of the oblast. The area of the district is 2032km2.[5] Its administrative center is the city of Kostroma (which is not administratively a part of the district). Population: 43,904 (2002 Census);
Kostromskoy District is located on the western edge of Kostroma Oblast, on the border with Yaroslavl Oblast. The Volga River runs from west to east through the southern section of the district, and the Kostroma River enters from the north through the Gorky Reservoir. 44% of the district is in agricultural production, 32% is forested, and about 10% is a dense network of lakes, swamps, and rivers. Kostromskoy District surrounds the regional city of Kostroma, and is 270 km northeast of Moscow. The area measures 80 km (north-south), and 40 km (west-east); total area is 2,032 km2 (about 3% of Kostroma Oblast). The administrative center is the town of Kostroma.[5]
The district is bordered on the north by Buysky District, on the east by Susaninsky District, Sudislavsky, and Krasnoselsky District; and on the south by Nerekhtsky District.
Kostromskoy District was formally created in 1928 out of Kostroma Uyezd. In 1929 it became part of Ivanovo Industrial Oblast. In 1932 it was liquidated and attached to the City of Kostroma, then reconstituted in 1935. It became part of Yaroslavl Oblast in 1936, before finally becoming part of Kostroma Oblast in 1944.
Within the framework of administrative divisions, Kostromskoy District is one of the twenty-four in the oblast. The city of Kostroma serves as its administrative center, despite being incorporated separately as a city of oblast significance—an administrative unit with the status equal to that of the districts.
As a municipal division, the district is incorporated as Kostromskoy Municipal District. The city of oblast significance of Kostroma is incorporated separately from the district as Kostroma Urban Okrug.