Jessica Hannah Glynne (born 20 October 1989) is an English singer and songwriter. She rose to prominence in 2013 as a featured artist on the singles "Rather Be" by Clean Bandit and "My Love" by Route 94, both of which reached number one on the UK Singles Chart.

Glynne signed with Atlantic Records in 2013. Her debut studio album, I Cry When I Laugh (2015), debuted at number one on the UK Albums Chart and saw the international success of the singles "Hold My Hand" and "Don't Be So Hard on Yourself". Glynne's second studio album, Always In Between (2018), also debuted at number one in the UK and saw continued success with the singles "I'll Be There", "These Days", "All I Am", "Thursday" and "One Touch"; the first of these made Glynne the first British female solo artist to have seven number one singles on the UK Singles Chart. After splitting with Atlantic Records, Glynne released her third studio album, Jess (2024), through EMI Records.

Glynne has achieved multiple accolades throughout her career, including a Grammy Award and nine Brit Award nominations. She was considered one of the "Most Influential People Under 30" by Forbes magazine in 2019.