Charlie Brown Jr. was a Brazilian rock band from Santos, São Paulo. The group was popular with disadvantaged youth because of their relatable commentary about social issues and the frequent use of skate punk and hip hop slang in their songs. The band won two Latin Grammy Awards and was one of the most-popular Brazilian bands of the late 1990s to mid-2000s.

Vocalist Chorão's drug addiction and disagreements with other musicians frequently overshadowed the band. Chorão was the only founding member to remain through several line-up changes. After Chorão died of a cocaine overdose on March 6, 2013, the band disbanded.

In 2015, the streaming platform Deezer reported that Charlie Brown Jr. was the second most-listened-to Brazilian band outside Brazil. In a Spotify survey also from 2015, the band placed 31st out of the 47 most-popular bands and artists.