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As of July 1, 2020, all EU/EEA/UK nationals and individuals holding permanent residence in the EU/EEA countries can enter Croatia freely, without restrictions or quarantine. All other foreign nationals, including US citizens, may enter the Croatia for business, tourism, or other pressing personal reasons, if they provide relevant proof. Please visit this Croatian Ministry of Interior webpage for more detailed information and instructions to follow.

Foreign national travelers must present a medical certificate with a negative COVID-19 PCR test result issued within 48 hours. Travelers whose test is older than 48 hours will be allowed to enter Croatia, but they will be issued a self-isolation order and will have to be tested again locally, at their own expense. Travelers must complete an "Enter Croatia Form" and must be presented to upon arrival. The form can be submitted online before departure. Travelers arriving from South Africa or the UK must present a medical certificate with a negative COVID-19 PCR test result issued no older than 48 hours.

Travelers who do not provide a negative PCR test result are subject to PCR test done immediately upon arrival to Croatia and remain in self-isolation until they receive a negative test result.  Travelers who fail to present a PCR test upon arrival and refuse to take a test locally will be subject to self-isolate or quarantine for 14 days. Travelers may be ordered to self-isolate or spend 14 days in official government quarantine facilities if deemed necessary to prevent the spread of COVID-19; placement in quarantine is at the expense of the traveler. Travelers who do not receive self-isolation orders are given a Pamphlet with Recommendations and Instructions from the Croatian Institute of Public Health that they must follow for 14 days after entering the country. Travelers arriving from South Africa or the UK are subject to a 14-day self isolation. They have the option to take a COVID-19 test (at their own expense) after day 7 to shorten the self-isolation period if they receive a negative result.

A list of entry and quarantine requirement exemptions can be found at https://www.koronavirus.hr/recommendations-and-instructions-for-crossing-the-state-border/736.