Dum and Dummer is a collaborative mixtape by American rappers Young Dolph and Key Glock. It was released on July 26, 2019, through Young Dolph's label Paper Route Empire. The production on album was primarily handled by Bandplay.

Dum and Dummer was preceded by two singles: "Baby Joker" and "Ill". The mixtape received generally positive reviews from music critics and was a moderate commercial success. It debuted at number eight on the US Billboard 200 chart, earning 36,000 album-equivalent units in its first week. The mixtape later spawned a sequel, Dum and Dummer 2, released on March 26, 2021.

Young Dolph and Key Glock announced the mixtape's release on July 22, 2019, which happened four days later. The music videos "Ill" and "Baby Joker", the singles from the mixtape, were released prior to that.

Dum and Dummer debuted at number eight on the US Billboard 200 chart, earning 36,000 album-equivalent units (including 2,000 copies in pure album sales) in its first week. This became the first US top-ten debut on the chart for both Young Dolph and Key Glock. The mixtape also accumulated a total of 43.7 million on-demand audio streams for the mixtape's songs.

Credits were adapted from Genius.