All My Heroes Are Cornballs is the third studio album by American rapper JPEGMafia, released on September 13, 2019 by EQT Recordings. After the release of his record Veteran (2018), he began recording tracks for its follow-up, with a total of around 93 songs by 2019. He handled the production, mixing and mastering in his home studio. The album features guest appearances from Abdu Ali, Helena Deland and Buzzy Lee, as well as additional vocals by Refined Sugar, Vegyn and Young Emoji. Vegyn also serves as a co-producer on one track.

An avant-garde, experimental hip hop, and punk rap album, All My Heroes Are Cornballs draws influences from experimental pop, glitch hop, ambient, noise and industrial music. It has a smoother and more melodic sound than its predecessor, employing uncommon song structures, extensive sampling, and a variety of vocal techniques such as rapping, screaming and singing, often in falsetto. Thematically, the album is personal, introspective, and presented in a stream of consciousness form, touching on the Internet culture, prejudice, political issues and JPEGMafia's newfound fame.

All My Heroes Are Cornballs was promoted as a "disappointment" with videos released on the rapper's YouTube, along with two singles: "Jesus Forgive Me, I Am a Thot" and "Beta Male Strategies". It was supported by the JPEGMafia Type Tour, which began in North America on October 14, 2019 and ended in Europe on July 6, 2020. Upon release, All My Heroes Are Cornballs received widespread acclaim from critics, with many highlighting the humorous, sarcastic lyrical content, as well as praising its detailed and chaotic production; some of them deemed it superior to Veteran, and it was placed in numerous publications' year-end lists. The album debuted at number 105 on the Billboard 200, becoming JPEGMafia's first entry in the chart.