Olof Thunberg (1925–2020), full name Fritz-Olof Thunberg, was a Swedish actor who played Sotén on Svenska Sesam, the Swedish co-production of Sesame Street.
Thunberg studied at the Dramatens acting school from 1950 to 1953. He was then employed at Norrköpings city theater where he also worked as a director. He made his film debut in 1953's I dur och skur and played organist Fredrik Blom in Ingmar Bergman's Winter's Light.
Thunberg's voice became familiar through his radio and narration work. He hosted as the title character on the horror/mystery anthology Mannen i svart ("Man in Black," borrowing a concept from Suspense and BBC radio), which from 1953 to 1958 presented stories ranging from Agatha Christie to Ray Bradbury. He later narrated the Swedish cartoons built around the character Bamse (and the related audio books).
Thunberg has been heard in the Swedish dubs of Pinchcliffe Grand Prix, The Neverending Story II (as Falkor), and the Disney movies Snow White and the Seven Dwarfs (Grumpy), The Jungle Book and The Jungle Book 2 (Shere Khan), Lady and the Tramp (Trusty and Boris), One Hundred and One Dalmatians (The Colonel), The Rescuers (Rufus), The Fox and the Hound (badger), and The Black Cauldron (Dallben).
His granddaughter is the environmental activist Greta Thunberg.