The Chinese Academy of Social Sciences (CASS) is a Chinese state research institute and think tank. It is a ministry-level institution under the State Council of the People's Republic of China.

The Chinese Academy of Sciences is the national academy for natural sciences and the highest consultancy for science and technology of the People's Republic of China. It is the world's largest research organization, with 100 research institutes, 2 universities, 69 thousand full-time employees, and 79 thousand graduate students.