Yes. You can reapply for K-ETA if your previous application was denied.
When reapplying, carefully review the passport information, personal information, and travel details entered in your previous application and make sure all information is accurate.
However, if you have a history of three repeated K-ETA applications within six months, your ability to reapply may be restricted. Please review your previous application carefully before submitting a new one.
If you are planning a trip to Korea, enter accurate information and apply for K-ETA.