Lake Cargelligo (/ˌleɪk kɑrˈdʒɛlɨɡoʊ/, locally [ˌlæɪk kaːˈdʒeləɡəʉ]) is a town in the Central West region of New South Wales, Australia, on Lake Cargelligo. It is in Lachlan Shire. At the 2011 census, Lake Cargelligo had a population of 1,380 people. Its name is said to be a corruption of the Aboriginal word 'Kartjellakoo' meaning 'he had a coolamon'. A coolamon is a shallow wooden dish. Alternatively it is derived from Wiradhuri and Ngiyambaa "gajal" for water container with suffix "lugu" for "her" or "his".