Si Prachan (, ) is a district (amphoe) in the eastern part of Suphan Buri province, central Thailand. Si Prachan is well known for being the location of the Thai Buffalo Conservation Village, buffalo conservation centre.
The government separated some parts of Tha Phi Liang District (now Mueang Suphan Buri) and Sam Chuk district to create Si Prachan District in 1901.
Si Prachan, formerly known as "Kraphung" (à ¸Âà ¸£à ¸°à ¸Âà ¸¸à ¹Âà ¸Â, ). It was renamed in 1937 in honour of Khun Si Prachanraksa (Sam Mithongkham), the first Si Prachan subdistrict headman.
Neighbouring districts are (from the south clockwise): Mueang Suphan Buri, Don Chedi and Sam Chuk; and Sawaeng Ha, Pho Thong, Samko and Wiset Chai Chan of Ang Thong province.
The main water resource of the district is the Tha Chin River.
Si Prachan is divided into nine subdistricts (tambons), which are further subdivided into 64 administrative villages (mubans).
There are six subdistrict municipalities (thesaban tambons) in the district:
There are four subdistrict administrative organizations (SAO) in the district: