The Nanjing decade is an informal name for the decade from 1927 to 1937 in the Republic of China. It began when Nationalist Generalissimo Chiang Kai-shek took Nanjing from Zhili clique warlord Sun Chuanfang halfway through the Northern Expedition in 1927. Chiang declared it to be the national capital despite the existence of a left-wing Nationalist government in Wuhan. The Wuhan faction gave in and the Northern Expedition continued until the Beiyang government in Beijing was overthrown in 1928. The decade ended with the outbreak of the Second Sino-Japanese War in 1937 and the retreat of the Nationalist government to Wuhan. GDP growth averaged 3.9 per cent a year from 1929 to 1941 and per capita GDP about 1.8 per cent. Historians view the decade as a period of Chinese conservatism.

The Republic of China (ROC), or simply China, was a sovereign state based on mainland China from 1912 to 1949 prior to the government's relocation to Taiwan, where it continues to be based today. The ROC was established on 1 January 1912 during the Xinhai Revolution against the Qing dynasty, ending the imperial history of China. The Republican government was ruled by the Kuomintang (KMT) as a one-party state based in Nanjing from 1927, until its flight to Taipei on 7 December 1949 following the KMT's de facto defeat by the Chinese Communist Party (CCP) in the Chinese Civil War. The CCP proclaimed the People's Republic of China on 1 October 1949, while the ROC retains control over the "Free Area", with the political status of Taiwan remaining in dispute to this day.