Nemetz is a German surname of Slavic origin that comes from a variation on the Slavic word Němec, meaning "mute" (in this context, ethnic German non-Slavic speakers). It may refer to:
- Andreas Nemetz (1799–1846), Moravian bandmaster and composer
- Karoline Nemetz (born 1958), Swedish former distance runner
- Kurt Nemetz (1926–2008), Austrian cyclist
- Lenora Nemetz, American theatre actress
- Max Nemetz (1886–1971), German film and stage actor.
- Nathaniel Nemetz (1913–1997), Canadian lawyer and judge