From Wednesday (1 June), all unvaccinated visitors must show proof of a negative PCR or antigen test taken within three days of arrival and undergo antigen testing when landing in Barbados.
Travellers will be free to leave without quarantine requirements if they test negative.
Unvaccinated travellers who have documented evidence of having had Covid within 90 days of their arrival into the country will not need to test on arrival but must show a negative pre-flight test.
The announcement followed news earlier this week Barbados is set to ease its pre-travel testing rules for fully vaccinated arrivals.