Jonathan George Brewer (born 30 January 1950) is an English documentary director and producer who was formerly a manager of rock music acts and artists.
Soon after beginning his career in music management, Brewer joined forces with artists such as David Bowie, Gene Clark of The Byrds, and Mick Taylor and Bill Wyman of The Rolling Stones, as well as Alvin Lee and 10 Years After. In 1978 Jon collected two Ivor Novello Awards on behalf of his company, Belfern Music. He was awarded the Ivor Novello Award for producing and publishing Gerry Rafferty's "Baker Street" Best Pop Song and another for Best Song Musically and Lyrically. Brewer was also involved in the reformation of the band Yes with Chris Squire, Jon Anderson, Steve Howe, Alan White and Rick Wakeman – the group being well known for their acrimonious relationships with each other. They went on to record the Keys To Ascension project with Jon Brewer managing.

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