Rivers Cuomo is an American musician, singer, and songwriter best known as the lead vocalist, lead guitarist, and primary songwriter of the rock band Weezer. Born on June 13, 1970, in New York City, he spent his early childhood living in various Buddhist communities throughout the Northeastern United States before his family settled in Pomfret, Connecticut, when he was five years old. Raised in a spiritually eclectic environment, Cuomo developed an early interest in music and went on to play in several bands in both Connecticut and California before forming Weezer in 1992.

Weezer's self-titled debut, widely known as the Blue Album, arrived in 1994 and became a major commercial and critical success, propelled by hit singles and heavy MTV rotation. Following this breakthrough, Cuomo enrolled at Harvard University, though he dropped out after recording Weezer's sophomore album, Pinkerton, released in 1996. While Pinkerton was initially a critical and commercial disappointment, it has since been frequently cited among the best albums of the 1990s and eventually earned platinum certification. The album's mixed reception pushed Cuomo's songwriting toward a more polished pop direction for Weezer's next effort, the Green Album, released in 2001. Weezer has since released more than a dozen albums, cementing the band's place as one of the most enduring acts in alternative rock.

Beyond his work with Weezer, Cuomo re-enrolled at Harvard and graduated in 2006. He has released several compilations of his personal demos, including Alone: The Home Recordings of Rivers Cuomo in 2007 and Alone II: The Home Recordings of Rivers Cuomo in 2008, and has shared thousands of home recordings through his website. Cuomo has also collaborated with a diverse range of artists, including Hayley Williams, B.O.B., AJR, Todd Rundgren, and Panic! at the Disco. Alongside American songwriter Scott Murphy, he has released two Japanese-language albums under the name Scott & Rivers, reflecting his longtime interest in Japanese culture and music.

Cuomo is married to Kyoko Ito. Throughout his career, he has balanced his role as a frontman and songwriter with a reputation for introspection, reinvention, and prolific output, remaining an influential figure in rock music for more than three decades.