Ennen päivänlaskua ei voi, United States: Troll - a love story) is a novel by Finnish writer Johanna Sinisalo published in 2000.

In the same year it won a Finlandia Prize for literature,[1] and later the James Tiptree, Jr. Award in 2004[2] for works of science fiction or fantasy that expand or explore understanding of gender.

The book has multiple narrative levels, and each chapter is broken into short segments that alternate between viewpoints of different characters.

By concentrating on gay characters the story explores power structures in interpersonal relationships without the need to consider how gender roles affect them.

The name of the book as well as the names of its chapters are taken from a Finnish song Päivänsäde ja Menninkäinen by Tapio Rautavaara and Reino Helismaa, which says "Kas, menninkäinen ennen päivänlaskua ei voi milloinkaan olla päällä maan" (translated "A troll cannot ever stay above the ground before sundown").