Nepean was an electoral district of the Legislative Assembly in the Australian state of New South Wales, originally created in 1859, and named after the Nepean River. It was abolished in 1904 due to the re-distribution of electorates following the 1903 New South Wales referendum, which required the number of members of the Legislative Assembly to be reduced from 125 to 90.[1] Nepean was recreated in 1927 and abolished again in 1981.[2][3][4]