Number of use
Single entry visa: You can enter only one time within 3 months
Multi entry visa: You can enter two times or unlimited during a valid period
Period of stay
Short term visa: You can stay for up to 90 days for tours, visits, etc. Visa waiver programs are applied to specific nationals.
Long term visa: You can stay for more than 91 days and must register at the immigration office within 90 days after entering Korea
A visa
A-1 Diplomat (외교)
A-2 Government official (공무)
A-3Agreement (협정)
A-3 visa is issued to United States Forces Korea non-military personnel with Status of Forces Agreement status. This includes family members, civilians, and newborns associated with the United States Forces Korea. Active duty military of the United States Forces Korea use their common access card and orders to enter South Korea.