Khian Sa district
Khian Sa is a district in Surat Thani province, Thailand.
Neighboring districts are Khiri Rat Nikhom, Phunphin, Ban Na Doem, Ban Na San, Wiang Sa, Phrasaeng and Phanom. Khian Sa is about 60 kilometres from Surat Thani.
Geography
The district is in the Khian Sa basin, which is crossed by the Tapi River, which also forms part of the eastern boundary of the district. The area of the district is mostly used for palm farming or rubber plantations, while along the river are swamps like the Nong Thung Thong swamp.The main road through the district is Thailand Route 44, which connects Krabi with Khanom.