Prins Hatt under jorden
- Blwyddyn: 1980
- Gwlad: Sweden
- Genre: Family, Music, Fantasy
- Stiwdio: Drakfilm Produktion
- Allweddair:
- Cyfarwyddwr: Ninne Olsson, Peter Hald
- Cast: Per Eggers, Eva Remaeus, Jan Lindell, Anders Granström, Hans Iveberg, Birgit Eggers
