Flyleaf is an American rock band formed in Belton, Texas, in 2002. The band has charted on mainstream rock, Christian pop, and Christian metal charts. They performed around the US in 2003 before releasing their eponymous debut album, Flyleaf, in 2005. The album went platinum after selling more than one million copies. Flyleaf released their second album, Memento Mori, in 2009, which debuted and peaked at No. 8 on the Billboard charts.

Shortly before the release of their third album, New Horizons (2012), lead vocalist Lacey Sturm announced her departure. Kristen May subsequently became the new lead vocalist. May sang with the band until August 2016. After several years of inactivity, the band announced in November 2022 that Sturm had rejoined.