List of Famous people who are 83

Werner Rodolfo Greuter, in Genoa, Italy, as a Swiss national, is a botanist. He is the chair of the Editorial Committee for the International Code of Botanical Nomenclature (ICBN) - the Tokyo Code (1994) and the St Louis Code (2000). His proposed policy as regards registration of botanical names proved unpopular and in 1999 he stepped back, not being elected anew: he completed his term as chair to be succeeded at Vienna in 2005. He has returned as a member of the editorial committee, contributing to the renamed International Code of Nomenclature for algae, fungi, and plants, the "Melbourne Code" (2012).

Donald Wayne Riegle Jr. is an American politician, author and businessman from Michigan. He served for five terms as a Representative and for three terms as a Senator in the U.S. Congress.

Juan Francisco Sarasti Jaramillo was a Colombian Roman Catholic archbishop.

Paul Grattan Kirk Jr. is an American lawyer and politician who served as a United States Senator from Massachusetts from 2009 to 2010, having been appointed to fill the vacancy created by the death of Ted Kennedy. From 1985 to 1989, he chaired the Democratic National Committee (DNC).