List of Famous people born on September 21st

Kim Yong-ju is a North Korean politician and the younger brother of Kim Il-sung, who ruled North Korea from 1948 to 1994. Under his brother's rule, Kim Yong-ju held key posts in the Workers' Party of Korea during the 1960s and early 1970s, but he fell out of favor in 1974 following a power struggle with Kim Jong-il. Since 1998, he has held the ceremonial position of Honorary Vice President of the Presidium of the Supreme People's Assembly, North Korea's parliament.

Lukian Araújo de Almeida or simply Lukian is a Brazilian footballer who plays as a striker for Avispa Fukuoka.

Djair Kaye de Brito is a Brazilian international footballer nicknamed Djair.

Yi-Ren Ng is a Malaysian American scientist who is an assistant professor in the Department of Electrical Engineering & Computer Sciences at the University of California, Berkeley. He was the founder, executive chairman and CEO of Lytro, a Mountain View, California-based startup company. Lytro was developing consumer light-field cameras based on Ng's graduate research at Stanford University. Lytro ceased operations in late March 2018.

Jun Takahashi is a Japanese fashion designer who created the brand Undercover.