Sukabumi Regency is a regency in southwestern Java, as part of West Java province of Indonesia. The regency seat is located in Palabuhan Ratu, 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 the largest regency in West Java and the second largest regency on Java after the Banyuwangi Regency in East Java.