Sheridan Barnett (born 1951) is a British former fashion designer who worked with London boutique Quorum and launched the brand Barnett and Brown with Sheilagh Brown during the late 1970s. He went on to combine own-brand design with freelance work for names such as Jaeger, Norman Hartnell and Reldan, also working as a university academic. Barnett won Bath Museum of Costume's Dress of the Year award in 1983.