Thma Puok (Khmer: ស្រុកថ្មពួក, "Crumbled Stone") is a district (Srok) in the north of Banteay Meanchey Province, in north-western Cambodia. The district capital is town located around 42 kilometres north of the provincial capital of Sisophon by road. The district shares a border with Thailand to the west and Oddar Meanchey Province to the north east. No national highway runs through the district but national road 56 from Sisophon to Samraong in Oddar Meanchey province crosses the district from north to south. The district is home to the large temple complex of Banteay Chhmar. The temple was built in the late 12th or early 13th century by Jayavarman VII and is a modest tourist destination.