The Harmonious Society (Chinese: 和谐社会; pinyin: héxié shèhuì; also known as Socialist Harmonious Society) is a socioeconomic concept in China that is recognized as a response to the increasing alleged social injustice and inequality emerging in mainland Chinese society as a result of unchecked economic growth, which has led to social conflict. The governing philosophy has therefore shifted around economic growth to overall societal balance and harmony. Along with a moderately prosperous society, it was set to be one of the national goals for the ruling vanguard Communist Party.

The concept of social harmony dates back to ancient China, to the time of Confucius. As a result, the philosophy has also been characterized as a form of New Confucianism. In modern times, it developed into a key feature of General Secretary Hu Jintao's signature ideology of the Scientific Development Concept developed in the mid-2000s, being re-introduced by the Hu–Wen Administration during the 2005 National People's Congress.

The promotion of the "Harmonious Society" demonstrated that Hu Jintao's ruling philosophy had departed from that of his predecessors. Near the end of his tenure in 2011, Hu appeared to extend the ideology to an international dimension, with a focus on the international peace and cooperation, which is said to lead to a "harmonious world". The administration of Hu's successor, Xi Jinping, has used the philosophy more sparingly, in favour of emphasizing his vision of the Chinese Dream.