Solange Piaget Knowles (; born June 24, 1986) is an American singer, songwriter and actress. Knowles expressed an interest in music from an early age and had temporary stints as a backup dancer for Destiny's Child, which featured her older sister Beyoncé Knowles among its members, before signing with her father Mathew Knowles' Music World Entertainment label. At 16, Knowles released her first studio album Solo Star (2002). She also appeared in the films Johnson Family Vacation (2004), and Bring It On: All or Nothing (2006).

In 2007, Knowles began to record music again. Heavily influenced by Motown girl groups, her second studio album Sol-Angel and the Hadley St. Dreams (2008) deviated from the pop-oriented music of her debut to Motown-inspired sounds from the 60's and 70's. It peaked at number nine on the US Billboard 200 and received positive reviews from critics. She followed this up with the 1980s pop and R&B-inspired extended play True (2012) on Terrible Records and her imprint Saint Records. Her third studio album, A Seat at the Table (2016) was released to widespread critical acclaim and became her first number-one album in the United States. The album's lead single, "Cranes in the Sky" won the Grammy for Best R&B Performance. Her fourth studio album, When I Get Home, was released in March 2019 to further critical acclaim.

Knowles says that her first passion is songwriting. Frequently compared by the media to her sister Beyoncé, Knowles has claimed that they have different aspirations and are musically different. She has been ranked by Billboard as the 100th most successful dance artist of all time, and in 2017 was honored with the "Impact Award" at the Billboard Women in Music event. Her other ventures include an endorsement deal with Rimmel London and a line of hip-hop-oriented merchandise for young children.

Knowles has also ventured into performance art, working in several international museums and exhibitions, such as the Elbphilharmonie, the Venice Art Biennale and the Solomon R. Guggenheim Museum. In 2022, Knowles became the third woman and first African American to compose a score for the New York City Ballet.