Grün (sometimes transliterated as gruen), is a German surname meaning "green". Notable people with the surname include:
Anastasius Grün, pseudonym of Count Anton Alexander von Auersperg (1806–1876), Austrian poet and liberal politician
Anselm Grün, German Benedictine padre, author of spiritual books, and clerical advisor
Arno Gruen, German psychologist and psychoanalyst
David Grüen, birth name of politician David Ben-Gurion, Polish-Israeli first Prime Minister of Israel and Executive Head of the World Zionist Organization
Derek Gruen, birth name of musician Del Marquis, the lead guitarist for the group Scissor Sisters
Dietrich Gruen, founder of the Gruen Watch Company
Eberhard Grün, German planetary scientist
Erich S. Gruen, American classicist and ancient historian
Fred Gruen, Australian economist, an early and influential voice in favour of free trade and tariff reductions in the 1960s and 1970s
Frederick G. Gruen, son of Dietrich Gruen, player in Gruen Watch Company
George J. Gruen, son of Dietrich Gruen, player in the Gruen Watch Company
Georges Grün, a former football defender and a TV presenter for the UEFA Champions League matches at RTL TVI
Jules-Alexandre Grün, French painter
Stefan Grun, Australian rules football umpire in the AFL
Victor Gruen (1903–1980), an Austrian-born commercial architect who emigrated to the United States in 1938 and is the father of the modern American shopping mall
Fictional characters:
Hannah Gruen
