2015 in downloadable songs for the Rock Band series

The Rock Band series of music video games supports downloadable songs for the Xbox 360, Xbox One, PlayStation 3 and PlayStation 4 versions through the consoles' respective online services. Users can download songs on a track-by-track basis, with many of the tracks also offered as part of a "song pack" or complete album at a discounted rate. All songs that are available to Rock Band 3 are playable in Rock Band Blitz.

Harmonix previously announced in February 2013 that it would stop regularly releasing new DLC songs for the Rock Band series after April 2, 2013, in order to focus on other projects, ending over 280 consecutive weeks of weekly releases dating back to 2007. On January 12, 2015, Harmonix announced that it would release three new DLC songs for the PlayStation 3 and Xbox 360 versions of Rock Band 3 on January 13, 2015, the first in nearly 21 months. The sudden release, along with a survey posted by Harmonix a few days later, hinted at the possibility of a new Rock Band game for eighth generation consoles.

Rock Band 4 was unveiled in March 2015, and released on October 6, 2015.

List of songs released in 2015
The following table lists the available songs for the Rock Band series released in 2015. All songs available in packs are also available as individual song downloads on the same date, unless otherwise noted. Dates listed are the initial release of songs on PlayStation Network and Xbox Live.

Starting from October 6, 2015, all music added to the downloadable content catalog is exclusive to Rock Band 4. In addition, due to changes in the charting format and gameplay of Rock Band 4, the released songs no longer support keyboard or Pro guitar and bass (future downloadable content will continue to support vocal harmonies and Pro drum charts), and most songs no longer display "family friendly" or "supervision recommended" ratings. Downloadable content from previous Rock Band titles (excepting The Beatles: Rock Band) is forward-compatible in Rock Band 4 within the same system family (Xbox 360 downloads are usable in the Xbox One version and PlayStation 3 downloads are usable in the PlayStation 4 version) at no additional cost.