If you are traveling to Korea, Republic with Canadian passport in most cases you do not need to obtain entry visa to Korea, Republic at the consulate beforehand. The period of stay though may be limited by the laws of Korea, Republic. You may check what is the allowed period of stay at the Korea, Republic consulate in Canada. All other applicants should check information on Korea, Republic visa requirements, procedure, application forms, fees and processing timings may be found here: https://south-korea.visacenter.ca.