Do South Korea passport holders need a visa to visit NL?

No visa needed. South Korean ordinary passport holders can enter the Netherlands visa-free for tourism for up to 90 days in any 180-day period across the Schengen Area. South Korea is a Schengen visa-exempt country. As confirmed by the official Dutch government (NetherlandsWorldwide), holders of a South Korean ordinary passport do not need a visa to visit the Netherlands for short stays. You may stay up to 90 days within any rolling 180-day period for tourism, business, family visits or transit — this limit is shared across the entire Schengen Area, not per country. At entry you must show a passport valid for at least 3 months beyond your planned departure (issued within the last 10 years), and may be asked for proof of onward/return travel, accommodation, and sufficient funds. ETIAS (the European Travel Information and Authorisation System) is NOT yet in force as of 30 May 2026: the EU has confirmed a Q4 2026 launch followed by a transitional period, so it is not currently required. Once it begins, South Koreans (a visa-exempt nationality) will need an approved ETIAS (EUR 20, valid 3 years) before boarding. The separate Entry/Exit System (EES) is being rolled out at Schengen borders to register entries/exits biometrically, but it does not require any application by the traveler.