Wur (t) z is a surname. Notable people with the surname include:
Alexander Wurz (born 1974), Austrian racing driver
Charles-Adolphe Wurtz (1817–1884), French chemist
Wurtz reaction
Wurtz-Fittig reaction
Francis Wurtz (born 1948), French member of the European Parliament
Johannes Wurtz (born 1992), German association footballer
Robert Wurtz (born 1936), American neuroscientist
Robert Wurtz (born 1941), French association football referee
Würtz (transliterated Wuertz) is the surname of:
Rasmus Würtz (born 1983), Danish association footballer
Michael Wuertz (born 1978), American baseball player