Leona Louise Lewis (born 3 April 1985) is an English pop (pop music) and R&B (contemporary R&B) singer-songwriter. Lewis rose to fame in 2006 as the winner of the third series (The X Factor (UK series 3)) of the British television series The X Factor (The X Factor (UK)).

Lewis has become a multi-platinum selling artist and three time Grammy Award nominee. She has released two albums to date, Spirit (Spirit (Leona Lewis album)) and Echo (Echo (Leona Lewis album)), in 2007 and 2009 respectively. Spirit became the fastest-selling debut album and the biggest seller of 2007 in both the UK and Ireland (Republic of Ireland), and made Lewis the first British solo artist to top the Billboard 200 with a debut album. Her second album, Echo (Echo (Leona Lewis album)), was released in November 2009.

Lewiss debut single "A Moment Like This" became the fastest selling UK single after being downloaded over 50,000 times within thirty minutes of its release. Her second single, "Bleeding Love", reached number one positions in over thirty singles charts around the world. In November 2008 she set a record in the UK for the fastest selling download-only release with her cover version of the Snow Patrol song "Run (Run (Snow Patrol song))" which sold 69,244 copies in two days. In November 2009, the first set of dates for her 2010 debut world tour (Leona Lewiss world tour) were announced.

Lewis has sold over 6.5 million albums worldwide.