Grünberg or Gruenberg (German for green mountain) may refer to:
- Places
- Grünberg, Hesse, a town in Hesse
- Grünberg (St. Bernhard-Frauenhofen), a part of Sankt Bernhard-Frauenhofen, Austria
- Grünberg, Silesia, the German name for Zielona Góra, Poland
- Grünberg, a part of Leopoldshagen, Mecklenburg, Western Pomerania
- Grünberg, a part of Ottendorf-Okrilla, Saxony
Grünberg is the German surname of:
- Alfred Grünberg, a worker, a member of the Communist Party of Germany (KPD) and a resistance fighter against the Nazi régime
- Carl Grünberg (1861–1940), founder of the Archiv für die Geschichte des Sozialismus und der Arbeiterbewegung (Archive for the history of socialism and workers movement) (1911–1930)
- Erich Gruenberg (b. 1924), British violinist
- Gottfried Grünberg (1899–1985), member of Gruppe Sobottka and temporary minister of defence of the GDR
- Grethe Grünberg (* 1988), ice dancer
- Hans-Bernhard von Grünberg, rector
- Hans-Ulrich Grünberg (* 1956), German chess player
- Isak Grünberg (1897–1953), Austrian translator and writer
- Karl Grünberg (1891–1972), German writer and journalist
- Klaus Grünberg (* 1941), German actor
- Louis Gruenberg, composer
- Martin Grünberg (1655–1706), architect
- Matthias Grünberg (* 1961), president of Sozialgericht court of law Dresden
- Max Gruenberg (born 1943), American politician
- Peter Grünberg (born 1939), German physicist and Nobel Prize winner
- Theodor Koch-Grünberg (1872–1924), ethnologist
- Theodor Grünberg, father of Peter, died in Czech imprisonment 27 November 1945
- Sven Grünberg, an Estonian ambient and progressive rock composer and musician
- Florence Guggenheim-Grünberg (1898–1989), scientist
Other people with variants of this surname include:
- Arnon Grunberg, a Dutch writer
- Greg Grunberg, a television actor
- Jack J. Grynberg
- Markus Grünberger, a goalkeeper currently playing for Bayern Munich reserve team