Ratchaburi (Thai: ราชบุรี, pronounced [râːt.t͡ɕʰā.bū.rīː]) or Rajburi, Rat Buri) is a town (thesaban mueang) in western Thailand, capital of Ratchaburi Province.
Ratchaburi town covers the entire tambon Na Mueang (หน้าเมือง) of Mueang Ratchaburi District. As of 2017 it had an estimated population of 36,169, down from 38,149 in 2005.