Paser Regency is a Regency (kabupaten) within East Kalimantan province in Indonesia, it is the southernmost regency of the East Kalimantan province. Its administrative centre is (or Tanah Grogot). It covers an area of 11,603.94 km2, and it had a population of 230,316 at the 2010 Census and 275,452 at the 2020 Census.Before 2007, this regency was formerly named Pasir Regency (Indonesian: Kabupaten Pasir).