Cilacap Regency
（重定向自Tjilatjap）
![Regent of Tjilatjap](/Images/godic/202502/16/COLLECTIE_TROPENMUSEUM_Regent_van_Tjilatjap_TMnr_100208611834.jpg")
![Darussalam Mosque is Cilacap's greatest mosque located on the town center](/Images/godic/202502/16/Grand_mosque_of_cilacap1834.jpg")
![Cilacap's power plant provides 600 megawatts of electricity](/Images/godic/202502/16/PLTU_cilacap1834.JPG")
![Carte de localisation du kabupaten dans la province de Java central.](/Images/godic/202502/16/Locator_kabupaten_cilacap1834.gif")
Cilacap Regency (also spelt: Chilachap, old spelling: Tjilatjap) is a regency (Indonesian:kabupaten) in the southwestern part of Central Java province in [Indonesia]. Its capital is the town of Cilacap.
Cilacap Regency covers an area of 2,124.47 km, and it had a population of 1,642,107 at the 2010 Census; the latest estimate (as at January 2014) is 1,662,248. The language used in Cilacap is the Javanese language, but most people can speak Indonesian. The dialect used is Banyumasan.