Erotikon is a 1920 Swedish romantic comedy film directed by Mauritz Stiller, starring Tora Teje, Karin Molander, Anders de Wahl and Lars Hanson. It is based on the 1917 play A kék róka by Ferenc Herczeg. The story revolves around an entomology professor obsessed with the sexual life of bugs, and his easygoing wife who is courted by two suitors.

Anders de Wahl
as Professor Leo Charpentier

Tora Teje
as Irene Charpentier

Lars Hanson
as Preben Wells

Karin Molander
as Marthe

Elin Lagergren
as Irene's mother

Vilhelm Bryde
as Baron Felix

Bell Hedqvist
as The Baron's Friend

Torsten Hammarén
as Professor Sidonius

Vilhelm Berndtson
as Jean the Butler

Stina Berg
as Servant