Greenwald may refer to:
- Greenwald, Minnesota, USA
Greenwald as a surname may refer to:
- Greenwald family, the rabbinic family of Puppa (Hasidic dynasty), originated from Hungary
- Alex Greenwald (born 1979), American musician and actor
- Andy Greenwald (born 1977), social commentator, specifically about popular music
- Bruce Greenwald (born 1946), American economist
- Glenn Greenwald (born 1967), attorney, blogger, and author of How Would a Patriot Act?
- Hank Greenwald (born 1935), former baseball announcer
- Jeff Greenwald (born 1954), author, performer, and Executive Director of Ethical Traveler
- Louis Greenwald (born 1967), New Jersey, USA politician
- Maggie Greenwald (born 1955), American film director and writer
- Michael Greenwald, birth name of Michael Kidd (1915-2007), American film and stage choreographer
- Moshe Greenwald (1853-1911), Rabbi of Chust, Hungary, and author of Arugas Habosem, a book of responsa
- Nora Greenwald (born 1977), also known as Molly Holly, American professional wrestler
- Robert Greenwald (born 1945), American film director, film producer, and political activist