Step Up 3D (also known simply as Step Up 3) is a 2010 American 3D dance film directed by Jon M. Chu and written by Amy Andelson and Emily Meyer. It serves as a sequel to 2008's Step Up 2: The Streets and the third installment in the Step Up film series. The film sees the return of Adam G. Sevani and Alyson Stoner, who portrayed Moose from Step Up 2: The Streets and Camille Gage from Step Up, respectively. It also stars Rick Malambri and Sharni Vinson.

The film follows Moose and Camille Gage as they head to New York University, the former dancer of whom is majoring in electrical engineering after promising his father that he would not dance anymore. However, he soon stumbles upon a dance battle, meeting Luke Katcher and his House of Pirates dance crew and later teaming up with them to compete in the World Jam dance contest against their rival, the House of Samurai dance crew.

Step Up 3D premiered in Hollywood at the El Capitan Theater on August 2, 2010, and was subsequently released in the United States on August 6, 2010, by Walt Disney Studios Motion Pictures, through conventional 2D and 3D formats. It was the second movie to feature the Dolby Surround 7.1 audio format theatrically, preceded by Toy Story 3. The film grossed $15.8 million in its opening weekend, the lowest opening of the first three films in the series, but went on to become the biggest box office of the series, grossing $159.2 million. It received mixed reviews from critics, with most praise towards its dance sequences and effective use of 3D, while criticism went towards the repetitive story and acting.

A sequel, Step Up Revolution, was released on July 27, 2012.