Großklein is a municipality in the district of Leibnitz in Styria, Austria.

Its place name can be considered unusual as "groß" is German for "big" or "tall" while "klein" translates to "small", thus, it can be translated as "big-small".

The "-klein" portion, according to German linguist Fritz Lochner von Hüttenbach, likely stems from Slavic roots in form of the word "glina" (=clay, loam) or "kljun" (=beak).

Modern Großklein (="large Klein") as well as its surrounding areas were once part of a larger area called "Klein".

[3] The municipality lies on the south Styrian Weinstraße.