Sonja Lindgren was born on December 15, 1936 in Strömsund, Jämtlands län, Sweden. She was an actress, known for Nybyggarland (1972), Barna från Blåsjöfjället (1980) and Jag Är Nyfiken - Blå (1968). She was married to Harry 'Sputnik' Källström. She died on July 17, 2011 in Strömsund, Sweden.

She sang for many years with various dance orchestras performing her own material as well as other composers songs. She became particularly famous for her interpretations of Dan Andersson's songs.