Discourses on ‘national studies’ have taken place in three North Asian countries from early on. This paper examines the current discourses on ‘national studies’ in the academia in these countries and points out their peculiarities in Korea where some religious groups have played a role in ‘the national studies.’ With regard to the contents of ‘the national studies’, Japanese scholars focus on Shinto and Chinese ones on Confucianism. However, Koreans identify ‘the national studies’ as Korean studies or they relate them to Confucianism. Unlike Japan and China, Korea assumes that a goal of ‘the national studies’ is the establishment of a national identity, so Korean scholars have failed to reach an agreement on the concepts and contents of ‘the national studies.’ Instead, some religious groups set a goal of pursuing a national identity, try to define the concepts and contents of ‘the national studies’ and promote ‘national studies movement’. Daejonggyo and Danworld are religious groups that actively participate in the ‘national studies movement’ in Korea. This paper states that the ‘national studies’ mentioned by Daejonggyo are Daejonggyo itself, and the ‘national studies’ indicated by Danworld are Danworld itself. This paper also notes that the religious groups like Daejonggyo and Danworld in Korea are actively involved in the recent ‘national studies movement’, which is an important factor to understand the current shape of Korean religions.