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 to release her debut studio album, I Cry When I Laugh (2015). Despite mixed critical response, it debuted atop the UK Albums Chart and spawned the singles "Hold My Hand" and "Don't Be So Hard on Yourself".

Glynne's second studio album, Always In Between (2018), 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 parting ways with Atlantic Records, she signed with EMI Records to release her third studio album, Jess (2024).

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.