List of Famous people born on January 21st

Marta Feuchtwanger was the irrepressible and somewhat eccentric third child of a prosperous Munich businessman who in 1912 married the author Lion Feuchtwanger. Although they married only after Marta became pregnant with Feuchtwanger's child, the marriage lasted forty-six years and she became both a devoted wife and a huge influence on his work. The Jewish couple were forced to emigrate during the Hitler period. After her husband died in 1958 Marta Feuchtwanger spent nearly three decades as a high-profile widow in Los Angeles.

Morris Mike Medavoy is an American film producer and business executive, as well as the co-founder of Orion Pictures (1978), former chairman of TriStar Pictures, former head of production for United Artists (1974–1978), and the current chairman and CEO of Phoenix Pictures.

Josep Pintat-Solans was the second Prime Minister of Andorra. A local business executive, he was unanimously elected Prime Minister by the General Council of Andorra and began serving on May 21, 1984; Pintat-Solans was re-elected in January 1986, receiving the votes of 27 out of 28 of the General Council's members, serving as Prime Minister until January 12, 1990. He died on October 20, 2007, after a long illness.

Herman Louis Verlinde is a Dutch theoretical physicist and string theorist. He is the Class of 1909 Professor of Physics at Princeton University, where he is also the Chair of the Department of Physics. He is the identical twin brother of Erik Verlinde.

John Joseph Ducey is an American actor who has appeared in over 20 television shows, mainly sitcoms.

Ana Luisa Flôr Moura is a Portuguese badminton player from the Club Sports Madeira. Moura was the National Junior champion in the girls' singles and doubles event in 2004, and also in the girls' singles, doubles and mixed doubles event in 2005. At the National senior championships, she won once in the women's singles, three times in the women's doubles and two times in the mixed doubles event. In 2007, Moura won the singles title at the Iran and Algeria International tournaments, and in the doubles event at the Ecuador and Mauritius International tournaments. In the same year, she competed at the 2007 BWF World Championships in the women's singles, and was defeated in the second round by Xie Xingfang, of China, 21-2, 21-7. Moura also qualified to compete at the Beijing 2008 Summer Olympics, but she was defeated by Jeanine Cicognini of Switzerland in the first round with the score 21-9, 21-13. Ana Moura is back on court. At the season 2018/2019 she is playing at Secção de Badminton - Associação Académica de Coimbra.

Tao Yong was the Deputy Commander of the People's Liberation Army Navy (PLAN), also the Lieutenant General of the People's Liberation Army.