List of Famous people born on October 21st

Tan Kah Kee, was a Chinese-born Singaporean businessman, investor, and philanthropist. He was a community leader and philanthropist active in Southeast Asia, Hong Kong, Shanghai, Xiamen, and Guangzhou. A prominent figure in the overseas Chinese community in Southeast Asia in the 20th century, he was responsible for gathering much support from the community to aid China in major events such as the Xinhai Revolution (1911), the Kuomintang's Northern Expedition (1926–28), and the Second Sino-Japanese War (1937–45). Apart from donating most of his assets and earnings to aid China in those major events, Tan set up funds in Southeast Asia and Hong Kong and contributed to the establishment of several schools in Southeast Asia and China's Fujian Province, including Xiamen University.

Rie Matsubara is a Japanese group rhythmic gymnast. Being World champion and 10-time Asian champion, she is widely considered to be the most successful Japanese rhythmic gymnast ever.

Albert Frick is a politician from Liechtenstein, member of the Progressive Citizens' Party, and the current President of the Landtag of Liechtenstein since March 2013.

Ge Jun, is the associate professor and master instructor of College of Mathematics and Computer Science of Nanjing Normal University. Ge took part in the composing and designing process of the mathematics paper of the National College Entrance Examination for several times. The papers of the year 2003, 2010 and 2012 were regarded as “extremely difficult” by examinees. As a result, he is called "the Emperor of Mathematics" by netizens in China. Some media also use this nickname.