Karl Wolf Biermann (born 15 November 1936) is a German singer-songwriter, poet, and former East German dissident. He is perhaps best known for the 1968 song "Ermutigung" and his expatriation from East Germany in 1976.

Biermann was born in Hamburg, Germany. His mother, Emma (née Dietrich), was a Communist Party activist, and his father, Dagobert Biermann, worked on the Hamburg docks. Biermann's father, a Jewish member of the German Resistance, was sentenced to six years in prison for sabotaging Nazi ships.