Sukabumi Regency is a regency in southwestern Java, as part of West Java province of Indonesia. The regency seat is located in Palabuhanratu, a coastal district facing the Indian Ocean. The regency fully encircles the administratively separated city of Sukabumi. Covering an area of 4,164.15 km2, the regency is geographically the largest regency in Java island. The regency had a population of 2,341,409 at the 2010 census and 2,725,450 at the 2020 census; the official estimate as at mid 2024 was 2,828,024, with a large proportion of it living in the northeastern part of the regency that encircles Sukabumi City, south of Mount Gede. A plan to create a new regency, the putative North Sukabumi Regency, was considered by the Indonesian government in 2013, but has been deferred until the end of the current morotorium on new creations of regencies.