Question: which countries do not need visa for south korea?
Answer: 180 days. Canada.
90 days. European Union citizens (except Cyprus) Antigua and Barbuda. Australia. Bahamas. Barbados. Brazil. Chile. Colombia. Costa Rica. Dominica. Dominican Republic. ... 
60 days. Lesotho. Russia.
30 days. Albania. Andorra. Argentina. Bahrain. Bosnia and Herzegovina. Botswana. Brunei. Cyprus. Eswatini. Fiji. Guam.