Jun Ke Choy (Chinese: 蔡增基; pinyin: Cài Zēngjī; Wade–Giles: Tsai Tseng-chi; 1892 – July 9, 1981)[1] was a Chinese American politician who served as mayor of Hangzhou and the 14th chairman of the China Merchants Steamship Company Group, now known as China Merchants Group.[2] He was also the founder of the Chinese Culture Center in San Francisco. Choy is commonly known as J.K. Choy.