King's Disease is the twelfth studio album by American rapper Nas. It was released on August 21, 2020, through Mass Appeal Records and marketed by Universal Music Group. It succeeds his eleventh album, Nasir, released two years prior. The album features guest appearances from Charlie Wilson, Hit-Boy, Big Sean, Don Toliver, Lil Durk, Anderson .Paak, Brucie B, Nas's supergroup the Firm, Fivio Foreign, and ASAP Ferg.

King's Disease received generally positive reviews and was viewed by music critics as a return to form following the muted reception of Nasir (2018).

The album won the Grammy Award for Best Rap Album at the 63rd Annual Grammy Awards, becoming Nas' first Grammy. The album's sequel, King's Disease II, was released on August 6, 2021 and is Nas's first release to be marketed by Sony Music (through The Orchard subsidiary) since the release of Street's Disciple in 2004.