Bełczyna [bɛu̯ˈt͡ʂɨna] (German: Süßenbach / Süssenbach) is a village in the administrative district of Gmina Wleń, within Lwówek Śląski County, Lower Silesian Voivodeship, in south-western Poland.

It lies approximately 5 kilometres (3 mi) north-east of Wleń, 14 km (9 mi) south-east of Lwówek Śląski, and 92 km (57 mi) West of the regional capital Wrocław.