"One Strike" is a song recorded by English-Canadian girl group All Saints for their fourth studio album, Red Flag (2016). The track was written by group member Shaznay Lewis and its producer Hutch, inspired by the breakdown of group member Nicole Appleton's highly publicised marriage to Oasis and Beady Eye frontman Liam Gallagher. "One Strike" is a mid-tempo, R&B, soul and synth-pop song that lyrically deals with the protagonist's emotions immediately after breaking up with their significant other.

All Saints are an English girl group formed in London in 1993. They were founded as All Saints 1.9.7.5 by music manager Ron Tom. with members Melanie Blatt, Shaznay Lewis, and Simone Rainford. The group struggled to find commercial success upon being signed to ZTT Records and were dropped by the label shortly after Rainford left the group. In 1996, the group were joined by sisters Nicole and Natalie Appleton and signed to London Records under their shortened name.