中古高地德語
Koblarji was first attested in written sources under its German name, as "Koflern" or "Koflein". The Slovene name is derived from the German name. The German name is derived from Middle High German "kofeler" 'hill dweller', from Middle High German "kofel" 'wooded hill'. An alternative but less likely theory derives the name from Middle High German "kobeler" 'hut dweller'.