Grosuplje (pronounced [ɡɾɔˈsùːpljɛ] ⓘ;[3] German: Großlupp)[4] is a town in central Slovenia, in the northwest of the traditional region of Lower Carniola.

Another theory derives the name from Lombard *grass(ah)lauffja 'rapids' but is undermined by the lack of fast-flowing water in the area.

Yet another theory derives it from the hypothetical Lombard name *Graslupus borrowed into Slavic as *Groslupъ, whereby *Groslupľe selo would literally mean 'Groslupъ's village'.

[7][8] It contains the remains of 15 anticommunist militia members, mostly from the Dobrepolje karst polje, that were held as prisoners of war and murdered between 26 and 28 October 1943.

The parish church in the settlement is dedicated to Saint Michael and belongs to the Roman Catholic Archdiocese of Ljubljana.