Here are a few examples from different eras and genres:
Classic Hollywood:
* Victor Sjöström (Swedish) - Director and actor, known for "The Phantom Carriage" and "The Wind"
* Greta Garbo (Swedish) - One of the most iconic actresses of all time, known for films like "Queen Christina" and "Camille"
* Ingrid Bergman (Swedish) - Renowned actress known for "Casablanca" and "Anastasia"
* Anita Ekberg (Swedish) - Known for her iconic role in "La Dolce Vita"
Modern Hollywood:
* Stellan Skarsgård (Swedish) - Known for roles in "Good Will Hunting", "Pirates of the Caribbean", and "Thor"
* Alexander Skarsgård (Swedish) - Known for "True Blood", "Tarzan", and "Big Little Lies"
* Alicia Vikander (Swedish) - Known for "Ex Machina", "The Danish Girl", and "Tomb Raider"
* Alexander Siddig (Sudanese-born, raised in Sweden) - Known for "Star Trek: Deep Space Nine" and "Game of Thrones"
* Mads Mikkelsen (Danish) - Known for "Casino Royale", "Hannibal", and "Another Round"
* Nikolaj Coster-Waldau (Danish) - Known for his role as Jaime Lannister in "Game of Thrones"
Other noteworthy actors:
* Björk (Icelandic) - Singer and actress, known for "Dancer in the Dark"
* Liv Ullmann (Norwegian) - Known for her collaborations with Ingmar Bergman, including "Persona" and "Scenes from a Marriage"
This is just a small selection of the many talented Scandinavian actors who have found success in Hollywood.
To narrow down the answer, it would be helpful to know what kind of film you are interested in or what period you are most curious about.