Beautiful Nightmare is the second studio album by British-Australian recording artist Reece Mastin, released on 19 October 2012, by Sony Music Australia.

In composing the album, Mastin collaborated with several songwriters and producers, including DNA Songs, Benji Madden, Lindsay Rimes, Damon Sharpe, Louis Biancaniello, Brian Howes and Rune Westberg, among others.

Beautiful Nightmare is the follow-up to Mastin's self-titled debut album, which features selected songs he performed as part of the top twelve on The X Factor (Australia).

[3] In April 2012, Mastin announced he was in the studio writing songs with Benji Madden of Good Charlotte, and Ilan Kidron of The Potbelleez.

[5] The album's first single "Shut Up & Kiss Me" was written by Mastin, Hayley Warner, and Anthony Egizii and David Musumeci of the production duo DNA Songs.

[8] He also collaborated with other songwriters and producers, including Lindsay Rimes, Khalil Walton, Michael Gerrard, and Jenna & Wac of Tonight Alive.

[14] Cameron Adams of the Herald Sun noted that the song "channels" Wheatus' "Teenage Dirtbag" (2000) Avril Lavigne's "Sk8er Boi" (2002).

[15] The album's title track "Beautiful Nightmare" is a dubstep and horror rock song "slightly reminiscent of Muse".

[7][11] Cameron Adams of the Herald Sun awarded Beautiful Nightmare three and a half stars, writing that the album "Sounds like teen spirit".

[15] The Border Mail's Jamie Horne also gave the album three and a half stars, calling it "fun and punchy — there's equally great pop to rock moments".

[20] Beautiful Nightmare was certified gold by the Australian Recording Industry Association (ARIA), denoting shipments of 35,000 copies.

[22] Beautiful Nightmare was released through Sony Music Australia on 19 October 2012, as both digital download and CD formats.

[23][24] On 16 October 2012, Mastin performed "Rock Star" during the live results show of the fourth season of The X Factor (Australia).

[9] To further promote the album, Mastin embarked on The Summer Nights Tour across Australia and New Zealand, which began on 1 December 2012 in Perth, and ended in Dunedin on 24 February 2013.