"Sunday Girl" is a song recorded by English synth-pop duo Erasure.

Written by Erasure members Vince Clarke and Andy Bell, it is the opening track on the duo's thirteenth studio album Light at the End of the World.

The introduction is very similar to the bridge of the duo's 1995 single "Fingers & Thumbs (Cold Summer's Day)".

An unofficial music video of the song was featured on Erasure's official website, consisting of backstage scenes and live performances from their Light at the End of the World world tour.

The single became Erasure's thirty-fourth Top 40 single in the UK, but has the distinction of being their lowest charting (and the first to miss the Top 30) since "Oh L'amour", twenty-one years earlier.