Situbondo Regency is a regency in the east of East Java province, Indonesia. It covers an area of 1,658.03 km², and had a population of 647,619 at the 2010 Census and 685,967 at the 2020 Census; the official estimate as at mid 2023 was 684,343. It is located towards the eastern end of Java, before Banyuwangi.