Quaderer is a German-language surname. It was first mentioned in 1397. 68 people in Liechtenstein had the surname Quaderer in 1990. Notable people with the surname include:Johann Baptist Quaderer (1810–1875), Liechtenstein politician
Rupert Quaderer (journalist) (1891–1975), Liechtenstein politician and journalist
Alfred Quaderer (1920–1944), Liechtenstein collaborator with Nazi Germany executed by Switzerland
Rupert Quaderer, Liechtenstein historian
Harry Quaderer, Liechtenstein politician
Alexander Quaderer, Liechtenstein footballer
Sascha Quaderer, Liechtenstein politician