List of Famous people born on April 21st

Michael Thomas Mann was a German-born musician and professor of German literature.

Osamu Nagayama is the chairman and chief executive officer of Chugai Pharmaceutical Co., one of Japan's largest drug companies.

Ryoichi Kimizuka is a Japanese screenwriter and director for television and film.

Mark Arnold Wainberg, was a Canadian HIV/AIDS researcher and HIV/AIDS activist. He was the Director of the McGill University AIDS Centre at the Montreal Jewish General Hospital and Professor of Medicine and of Microbiology at McGill University. His laboratory primarily studies HIV reverse transcriptase, the molecular basis for drug resistance, and gene therapy. He received a B.Sc. from McGill University in 1966, a Ph.D. from Columbia University in 1972, and did his post-doctoral research at Hadassah Medical School of the Hebrew University.

Nílton Ferreira Júnior, simply known as Nílton, is a Brazilian footballer who plays as a defensive midfielder.

Maximo Nelson is a professional baseball pitcher who is currently free agent. Nelson played for Chunichi Dragons of Nippon Professional Baseball from 2008 to 2012.

Murathan Mungan is a Turkish author, short story writer, playwright and poet.

Elisabeth of Württemberg was an Archduchess of Austria by marriage to Archduke Francis of Austria.

Archduchess Maria Anna of Austria was an Archduchess of Austria by birth, and a Princess-Abbess of the Theresian Institution of Noble Ladies in Prague.