Cianjur Regency (Indonesian: Kabupaten Cianjur, pronounced [kabuˌpat̪ɛn t͡ʃiˈaɲd͡ʒʊr]; Sundanese: Kabupatén Cianjur) is a regency (kabupaten) of West Java, Indonesia. The area of the regency is 3,614.38 km and its population at the 2010 Census was 2,171,281; the 2020 Census produced a total of 2,477,560 and the official estimate published by the regency government as at 2025 was 2,610,316 (comprising 1,333,933 males and 1,276,383 females). The town (district) of Cianjur is its seat.
Northern parts of the regency form a valley (above the 'neck' or narrowest part of the regency), and are far more densely populated than southern regions, with 68.4% of the regency's population in just 30.0% of its area. As such, a portion of the northern valley (consisting of Cugenang, Pacet, Sukaresmi and Cipanas Districts in the far northwest of the regency) was briefly included in a definition of Greater Jakarta called Jabodetabekjur (with the "jur" standing for Cianjur).