If you are a citizen in a country outside the EU and want to visit Sweden for a maximum of 90 days, you may need to apply for a visa. A visa is only valid for your stay in the Schengen countries for up to 90 days during a period of 180 days.

Information about citizens who require visa for entry into Sweden: Countries whose citizens need a visa to enter Sweden.

If you need a visa to visit Sweden you can find more information on the website of the Swedish Migration Agency; Visiting Sweden. 

On the website you also find information about what you need to do and who to contact in order to apply for a visa.
Go straight to the English version of the service.