Alesha Anjanette Dixon (born 7 October 1978) is an English singer, rapper, dancer, television personality, and author. She rose to prominence in the early 2000s as a member of the R&B, garage and hip hop group Mis-Teeq, who had seven UK top 10 hits, two top 10 double platinum albums, and sold over 12 million records worldwide. After Mis-Teeq disbanded in 2005, Dixon pursued a career as a solo artist, signing a recording contract with Polydor Records. She released her debut solo studio album, Fired Up, in 2006, but due to poor record sales of its first two singles, "Lipstick" and "Knockdown", she was subsequently dropped from Polydor.

In 2007, Dixon won the fifth series of the BBC One dancing competition show Strictly Come Dancing. Her television exposure led to a successful musical comeback, which included her signing to Asylum Records. In 2008, she released her second studio album, The Alesha Show, which was certified platinum by the British Phonographic Industry (BPI) and produced the successful singles "The Boy Does Nothing" and "Breathe Slow", the latter of which became her highest charting single and earned her a Brit Award nomination.

In 2009, Dixon became a judge on Strictly Come Dancing, and the following year, she released her third studio album, The Entertainer. In 2012, shortly after judging on the ninth series of Strictly Come Dancing, Dixon quit to become a judge on the ITV talent competition show Britain's Got Talent. Her fourth studio album, Do It for Love, was released in 2015. In 2020, Dixon was a judge on America's Got Talent: The Champions, and in 2021, she was a judge on Walk the Line. In 2022, she judged on the tenth season of Australia's Got Talent.

As a television presenter, Dixon has hosted Alesha's Street Dance Stars (2010), Your Face Sounds Familiar (2013), Text Santa (2014–2015), Dance Dance Dance (2017), The Greatest Dancer (2019–2020), Comic Relief (2019–2022), and the Eurovision Song Contest 2023. She has also written children's books, including the best-selling novel series Lightning Girl.