"On My Mind" is a song by English singer Ellie Goulding from her third studio album, Delirium (2015). It was released as the lead single from Delirium on 17 September 2015 by Polydor Records. Written by Goulding, Max Martin, Savan Kotecha and Ilya Salmanzadeh, "On My Mind" is an electropop and R&B song whose instrumentation consists of scratchy guitars, trap drums, slapped beats and sharp, syncopated electronica. Lyrically, "On My Mind" talks about a one-night stand with someone the protagonist should not be with, prompting a dichotomy between heart and head. Though firmly denied by Goulding, many critics considered it an answer song to Ed Sheeran's "Don't".

Elena Jane Goulding is an English singer and songwriter. After signing with Polydor Records, she released her debut extended play, An Introduction to Ellie Goulding (2009). Goulding's debut studio album, Lights (2010), debuted at No. 1 on the UK Albums Chart and was later reissued as Bright Lights, spawning three successful singles: a cover of Elton John's "Your Song", "Starry Eyed", and "Lights". Her second studio album, Halcyon (2012), was preceded by the lead single "Anything Could Happen". Halcyon Days (2013), a repackaged edition of Halcyon, produced the single "Burn", which became her first No. 1 single in the UK. Following her third studio album, Delirium (2015), and its lead single "On My Mind", Goulding received her first Grammy Award nomination for Best Pop Solo Performance for her single "Love Me like You Do".