Sonja Oppenhagen (b. 1948) was the Danish voice of Red, Ma Gorg and others in Fragglerne. She was also part of the Danish dub of Labyrinth, Labyrinten til troldkongens slot.
At the age of 9 she started on the Royal Ballet School in Copenhagen. She had to stop some years after due to a issue with her feet. During the '60s she had several movie roles where she was cast as the sweet and innocent teenage girl. In 1968 she began on Odense theaters acting school and graduated in 1971. Since then she has appeared on both theaters, TV and in movies. Her most known role in Denmark are as Vicki Arnesen on the television series Matador.