Sanggau is a regency in West Kalimantan province of Indonesia. It is situated in the north-central part of the province, with an area (since the separation of the former eastern part of the regency in 2003 to create Sekadau Regency) of 12,857.80 km² and a population of 408,468 at the 2010 Census; the latest official estimate (for January 2014) is 422,448.