Gunn Wållgren (born Gunnel Margaret Haraldsdotter Wållgren; ; was a Swedish stage and film actress. She is best remembered for her role in Ingmar Bergman's film Fanny and Alexander.

Fanny and Alexander is a 1982 period drama film written and directed by Ingmar Bergman. The plot focuses on two siblings and their large family in Uppsala, Sweden during the first decade of the twentieth century. Following the death of the children's father, their mother remarries a prominent bishop who becomes abusive towards Alexander for his vivid imagination.