Dłużec [ˈdwuʐɛt͡s] is a village in the administrative district of Gmina Lwówek Śląski, within Lwówek Śląski County, Lower Silesian Voivodeship, in south-western Poland. Prior to 1945 it was in Germany.
It lies approximately 10 kilometres (6 mi) east of Lwówek Śląski, and 94 kilometres (58 mi) west of the regional capital Wrocław.