How long can a Korean tourist visa be used?

South Korea tourist visas include single visa, double visa and multiple visa.

A single-entry visa can only enter and exit South Korea once within the validity period. The stay period is within 90 days and is valid for three months.

With a double visa, you can enter and exit South Korea twice within the validity period. Each stay is within 90 days and is valid for six months.

Multiple times visa allows you to enter and exit South Korea any number of times within the validity period. Each stay is limited to 30 days and is valid for one to three years (if you apply again after the three-year multiple visa expires, you can get a multiple visa valid for five years).