Greenberg is a 2010 American romantic comedy-drama film directed by Noah Baumbach, who wrote the screenplay and co-wrote the story with his then-wife Jennifer Jason Leigh. The film stars Ben Stiller, Greta Gerwig, Rhys Ifans, and Leigh, with Mark Duplass, Merritt Wever, Chris Messina, Brie Larson, Juno Temple, Jake Paltrow, and Dave Franco in supporting roles. The film's soundtrack features the first film score by James Murphy.

The film had its world premiere at the 60th Berlin International Film Festival on February 14, 2010. Distributed by Focus Features, Greenberg began a limited theatrical release in New York City and Los Angeles on March 19, 2010, followed by a wide release in the United States on March 26. It received positive reviews from critics and grossed $7.4 million worldwide against a budget of $25 million.