Bunyawat Witthayalai (Thai: โรงเรียนบุญวาทย์วิทยาลัย) is the first public and biggest secondary school in Lampang, Thailand. It has also long been regcognized among top high schools in the northern region and has often been placed in top ten of the national high school ranking over the recent decade. From the statistical survey in 2009, the school was ranked in the 5th biggest high school table in Thailand in terms of student body with number of 4869 students.