中日韓三國合作祕書處係由中華人民共和國、日本同南韓3國政府建立嘅國際組織。2011年9月1號，祕書處喺南韓首爾正式成立。
The Trilateral Cooperation Secretariat is an international organization established by the governments of the People's Republic of China, Japan and South Korea. On September 1, 2011, the Secretariat was officially established in Seoul, South Korea.