"Katy on a Mission" is a song performed by British recording artist Katy B. It was released by Rinse accompanied by a b-side titled "Louder" as her debut single and lead single from her debut album, On a Mission, on 22 August 2010. The song was co-written by Benga, Katy B and Geeneus, and produced by Benga. Musically, the song is constructed around beats, synths and a bassline found most prominent in the dubstep music genre. It achieved charting success in the United Kingdom where it topped the UK Dance Chart and UK Indie Chart while peaking at number five on the UK Singles Chart. The single was accompanied by a music video which was directed by Johny Mourgue.

The song has since been certified Gold in the UK for selling over 400,000 copies, making it Katy B's first and only single so far to do so.

Katy B had been working with British underground grime, garage and house record producers since the age of fifteen before debuting "Katy on a Mission" to her mainstream audience. The song, originally "just another dubstep track Katy was going to vocal," was written by Katy B and produced by British record producer Benga. In an interview with Kieran Yates of The Guardian, Katy mentioned that without Benga's beat, "Katy on a Mission" would have not been as successful. It was inspired by how Katy feels when she goes raving with her friends. Speaking to Greg Cochrane from the BBC, she explained:

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