Do Finland passport holders need a visa to visit SI?

Finnish passport holders do NOT need a visa to visit Slovenia. Both countries are EU members in the Schengen Area, so Finns travel under EU freedom of movement and may enter with a valid passport or national ID card and stay indefinitely (registration required only after 3 months). Finland and Slovenia are both European Union member states (Finland since 1995, Slovenia since 2004) and both are part of the Schengen Area (Slovenia joined in 2007). As an EU/EEA citizen, a Finnish passport holder enjoys the right of free movement and needs no visa, ETIAS authorization, or residence permit to enter Slovenia for tourism or any other purpose. Entry is permitted on the basis of a valid Finnish passport or a valid Finnish national identity card. Because both nations are inside Schengen, internal border checks are normally absent, though Slovenia may temporarily reinstate spot checks for public-policy or security reasons. There is no fixed limit on a tourist stay: a Finnish citizen may reside in Slovenia for up to three months without any formality, and for stays beyond three months simply needs to obtain a residence registration certificate from the local administrative unit. The Schengen 90/180 short-stay rule and the upcoming ETIAS travel authorization apply only to non-EU visa-exempt nationals (e.g. US, UK, Canadian travelers) and do NOT apply to Finnish or other EU citizens. The verdict is firmly visa-free, confirmed against the EU Your Europe portal and the Slovenian Police.