Which rapper released the 2012 album 'good kid, m.A.A.d city'?

The rapper who released the 2012 album good kid, m.A.A.d city was Kendrick Lamar.

Released on October 22, 2012, the album was Lamar's major-label debut and his second studio album, following Section.80. It was issued through Top Dawg Entertainment, Aftermath Entertainment, and Interscope Records, with Dr. Dre serving as an important mentor and collaborator.

The album is structured as a coming-of-age story about Lamar's teenage years in Compton, California. Songs such as "Swimming Pools (Drank)," "Backseat Freestyle," and "m.A.A.d city" combine personal storytelling with themes of peer pressure, violence, family, faith, and ambition. Its subtitle, "A Short Film by Kendrick Lamar," reflects the album's cinematic narrative design.

A common mix-up is confusing the album with Lamar's earlier Section.80 or with Dr. Dre's 1992 album The Chronic. Drake appears as a guest on the track "Poetic Justice," but Kendrick Lamar is the album's principal artist.