Liao Zhongkai (April 23, 1877 – August 20, 1925) was a Chinese-American Kuomintang leader and financier. He was the principal architect of the first Kuomintang–Chinese Communist Party (KMT–CCP) United Front in the 1920s. He was assassinated in Canton in August 1925.

Liao joined the Chinese Revolutionary Alliance in 1905 upon its founding and became the director of the financial bureau of Guangdong after the founding of the Republic of China. In the early struggles of the party, Liao Zhongkai was arrested by Guangdong strongman Chen Jiongming in June 1922. After Chen's defeat Liao became Civil governor of Guangdong from May 1923 to February 1924, and then again from June to September 1924. During the first Kuomintang–Chinese Communist Party cooperation period, he was appointed to the Kuomintang Executive Committee. When the KMT was reformed in 1924, he was named the head of the Department of Workers, and then Department of Peasants. Later he became Minister of Finance of the southern government, seated in Guangdong. When Sun Yat-sen died in Beijing in March, 1925, and Liao was one of the three most powerful figures in the Kuomintang Executive Committee, the other two were Wang Jingwei and Hu Hanmin.

Liao was assassinated before a Kuomintang Executive Committee meeting on August 20, 1925, in Guangzhou, when five gunmen riddled him with bullets from Mauser C96s as he stepped out of his limousine. Suspicion for the act fell upon Hu Hanmin, who was then arrested. This left only Wang Jingwei and the rising Chiang Kai-shek as rivals for control of the Kuomintang.