Marcus Warner (b. 1996) is an English composer, songwriter and producer. His works are known for combining modern hybrid orchestral scores with Celtic and Asian folk music and have appeared on TV networks such as ITV in the UK, RTL in the Netherlands, and NHK in Japan. 

Warner began releasing music online in 2010, at the age of 14. His initial work was largely experimental, spanning several musical genres including drum and bass, ambient and classical. Over the next few years Warner would develop his composing methods, integrating new influences into his music such as folk, synth-pop and soundtrack music. His unique take on the orchestral genre earned a worldwide audience and would allow him to continue self-releasing all his work as well as filming several music videos and travel documentaries, which he has been doing professionally since 2016.