NX Newcastle, formerly known as the O2 Academy Newcastle, is a music venue in Newcastle upon Tyne, England. It opened in the former Majestic Ballroom building on 14 October 2005 as the Carling Academy, and was renamed for Telefónica Europe’s O2 mobile network brand in 2008. The venue was managed by Academy Music Group until early 2022, when Electric Group took over the operation of the site. Following a complete refurbishment, it reopened as NX Newcastle in September 2022.

The O2 Academy has two rooms and can host up to 2,000 people for a show. Major bands and solo musicians that have performed in the main room since 2005 include Arctic Monkeys, Adele, Katy Perry, The Libertines, Sam Smith, McFly, Blondie and Amy Winehouse. The upstairs room, officially known as O2 Academy2, is smaller and hosts performances by lesser-known bands. The venue has also hosted club nights, including Dirty Pop, Ikon Live and Alpha.