O
- Ooberman: Indie-pop band (late 1990s - 2007)
- Orchestral Manoeuvres in the Dark: (aka OMD) Electronic music band.
- The Open: 5-piece indie band (2003–2006)
- Our Kid 1970s boy band whose hit "You just might see me cry" went to No. 1 in the UK charts.
Read more about this topic: List Of Bands From Merseyside