"Lighter" is a song by Swedish electronic artist Galantis, French DJ David Guetta and Australian pop rock band 5 Seconds of Summer.

It was released on 1 March 2024, as a single from Galantis' upcoming fourth studio album, Rx, via Big Beat Records.

Michael [Clifford] is such a music lover very much like me, and working closely with him on producing the live elements like strings, guitar and drums was very inspiring.

Shannon Garner of EUPHORIA stated, "'Lighter' is a foray into dance music [...] incorporating their distinct styles, the dreamy track is produced in a way that ascends you into another reality with its breezy, danceable beats and infectious sing-along choruses.

"[5] Hannah Gadd of Redbrick remarked, "The lyrics are on the simpler side, something which is unusual from 5SOS' recent music but works with this genre.