| Official Name: | Ban Phraek |
| Native Name: | บ้านแพรก |
| Native Name Lang: | th |
| Settlement Type: | Amphoe |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ayutthaya |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Ban Phraek |
| Subdivision Type3: | Tambon |
| Subdivision Name3: | 5 |
| Subdivision Type4: | Muban |
| Established Title: | Amphoe established |
| Population Total: | 9250 |
| Population As Of: | 2005 |
| Population Density Km2: | 236.6 |
| Area Total Km2: | 39.1 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 13240 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 1416 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 14.6478°N 100.5825°W |
Ban Phraek (in Thai pronounced as /bâːn pʰrɛ̂ːk/) is the northernmost district of Ayutthaya province.
Tambon Phraek was separated from Maha Rat district to become a minor district (king amphoe) in 1937. It was upgraded to a full district on 10 December 1959.
Neighboring districts are (from the north clockwise) Mueang Lopburi of Lopburi province, Don Phut of Saraburi province, Maha Rat of Ayutthaya Province, and Chaiyo of Ang Thong province.
The district is divided into five sub-districts (tambon), which are further subdivided into 27 villages (muban). Ban Phraek has township (thesaban tambon) status and covers parts of tambon Ban Phraek and Sam Phaniang. There are two tambon administrative organizations (TAO).
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