I am planning to visit Jeju island for a week in April 2019. Do I need a visa to travel there?
You do require a visa.
1. Nationals of the following countries are NOT included in the visa-free entry into Jeju Special Self-Governing Province (24 countries)
Iran, Sudan, Syria, Macedonia, Cuba, Kosovo, Palestine, Afghanistan, Iraq, Ghana, Nigeria, Yemen, Egypt, Gambia, Senegal, Bangladesh, Kyrgyz, Pakistan, Somalia, Uzbekistan, Nepal, Cameroon, Sri Lanka, Myanmar
This list was different before and the new list is in effect since August 1, 2018