Lok Tsui is one of the 31 constituencies of the Tuen Mun District Council, one of the nine local councils in the New Territories, Hong Kong. Located in the far west end of the district, the seat elects one member of the council every four years. Since its creation in 1994, the seat has been held by the Democratic Party except for a brief period from 2015 to 2019, when it was held by pro-Beijing independent councillor Junius Ho.