| En Name: | Buysky District |
| Ru Name: | Буйский район |
| Image View: | Тебза река - panoramio.jpg |
| Coordinates: | 58.4833°N 73°W |
| Image Coa: | Coat of Arms of Bui rayon (Kostroma oblast).png |
| Federal Subject: | Kostroma Oblast |
| Adm Data As Of: | April 2014 |
| Adm Ctr Type: | town |
| Adm Ctr Name: | Buy |
| Urban-Type Settlement Of District Significance Type: | Urban settlements (urban-type settlements) |
| No Of Urban-Type Settlements Of District Significance: | 1 |
| Selsoviet Type1: | Settlements |
| No Of Selsoviets Type1: | 2 |
| No Of Urban-Type Settlements: | 1 |
| No Of Rural Localities: | 260 |
| Counts Ref: | [1] [2] |
| Mun Data As Of: | March 2014 |
| Mun Formation1: | Buysky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 1 |
| Mun Formation1 No Of Rural Settlements: | 2 |
| Area Km2: | 3248 |
| Pop 2010Census: | 11829 |
| Urban Pop 2010Census: | 40.5% |
| Rural Pop 2010Census: | 59.5% |
| Website: | http://bmr44.ru/ |
| Date: | August 2011 |
Buysky District (Russian: Бу́йский райо́н) is an administrative[3] and municipal[4] district (raion), one of the twenty-four in Kostroma Oblast, Russia. It is located in the west of the oblast. The area of the district is 3248km2. Its administrative center is the town of Buy (which is not administratively a part of the district). Population: 8,847 (2002 Census);
Within the framework of administrative divisions, Buysky District is one of the twenty-four in the oblast. The town of Buy 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.
As a municipal division, the district is incorporated as Buysky Municipal District. The town of oblast significance of Buy is incorporated separately from the district as Buy Urban Okrug.