Chen-Ning Franklin Yang (simplified Chinese: 杨振宁; traditional Chinese: 楊振寧; pinyin: Yáng Zhènníng) (born October 1, 1922) is a Chinese-American physicist who works on statistical mechanics and particle physics. He and Tsung-dao Lee received the 1957 Nobel prize in physics for their work on parity nonconservation of weak interaction. Yang became a United States citizen in 1964.

Yang was born in Hefei, Anhui, China; his father Yang Ko-Chuen (Chinese: 楊武之; pinyin: Yáng Wǔzhī) (1896–1973) was a mathematician and his mother Luo Meng-hua (羅孟華) was a housewife. Yang attended elementary and high school in Beijing, and in the autumn of 1937 his family moved to Hefei after the Japanese invaded China. In 1938 they moved to Kunming, Yunnan, where the National Southwestern Associated University was located. In the same year, as a second year student, Yang passed the entrance examination and studied at the National Southwestern Associated University. He received his bachelor's degree in 1942, the thesis being about the application of group theory to molecular spectra, under the supervision of Wu Ta-you (吴大猷) (1907–2000). He continued to study graduate courses there for two years under the supervision of Wang Chu-hsi (王竹溪) (1911–1983), working on statistical mechanics. In 1944 he received his master's degree was awarded a scholarship known as the Boxer Indemnity (Chinese: 庚子賠款; pinyin: Gēngzǐ péikuǎn), a scholarship set up by the United States government using the funds raised from the money China was forced to pay out following the Boxer Rebellion. He was delayed for one year, during which time he taught in a middle school as a teacher and studied field theory.