Joe Swanberg is an American independent filmmaker. Known for micro-budget films which make extensive use of improvisation, Swanberg is considered a major figure in the mumblecore film movement. His films often focus on relationships, sex, technology, and the filmmaking process. He is also known for his collaboration with Greta Gerwig.

Mumblecore is a subgenre of independent film characterized by naturalistic acting and dialogue, low budgets, an emphasis on dialogue over plot, and a focus on the personal relationships of young adults. Filmmakers associated with the genre include Andrew Bujalski, Lynn Shelton, the Duplass brothers Mark and Jay, Greta Gerwig, Aaron Katz, Joe Swanberg, and Ry Russo-Young. In many cases, though, these directors reject the term. The genre is a mostly American phenomenon. The related term mumblegore has been used for films mixing the mumblecore and horror genres.