Ellen Radka Toneff (25 June 1952 – 21 October 1982) was a Norwegian jazz singer, daughter of the Bulgarian folk singer, pilot and radio technician Toni Toneff, she was born in Oslo and grew up in Lambertseter and Kolbotn. She is still considered one of Norway's most outstanding jazz singers.
Toneff holds a very special position in the Norwegian jazz history. With her moderate, but intense expression and her discerning musicianship, she made a deep impression on many people. Her highly personal and original qualities, where she combined influences from her father's musical heritage in Bulgaria, with a range of influences from, among other jazz and rock, led her to become a beacon for singers both in Norway and internationally.
She studied music at Oslo Musikkonservatorium (1971–75), combined with playing in the jazz rock band «Unis». She also had her own Radka Toneff Quintet (1975–80), with changing lineup. including musicians like Arild Andersen, Jon Balke, Jon Eberson and Jon Christensen, among others. From 1979 she cooperated with Steve Dobrogosz. In 1980 she participated in the Norwegian national final of the Eurovision Song Contest with the song Parken by Ole Paus.