List of Famous people who are 73

Susanna Kaysen is an American author, best known for her 1993 memoir Girl, Interrupted.

Wolfgang Edgar Nolting is a retired German Vizeadmiral and former Inspector of the Navy from 2006 until 2010.

Carol Ann Bartz is an American business executive, former president and CEO of the internet services company Yahoo!, and former chairman, president, and CEO at architectural and engineering design software company Autodesk.

Alex James Wilkie FRS is a British mathematician known for his contributions to model theory and logic. Previously Reader in Mathematical Logic at the University of Oxford, he was appointed to the Fielden Chair of Pure Mathematics at the University of Manchester in 2007.

Alexander (Lex) Schrijver is a Dutch mathematician and computer scientist, a professor of discrete mathematics and optimization at the University of Amsterdam and a fellow at the Centrum Wiskunde & Informatica in Amsterdam. Since 1993 he has been co-editor in chief of the journal Combinatorica.

Alan Paige Lightman is an American physicist, writer, and social entrepreneur. He has served on the faculties of Harvard University and Massachusetts Institute of Technology (MIT) and is currently a Professor of the Practice of the Humanities at the Massachusetts Institute of Technology (MIT). He was one of the first people at MIT to have a joint faculty position in both the sciences and the humanities. In his thinking and writing, Lightman is known for exploring the intersection of the sciences and the humanities, especially the dialogue between science, philosophy, religion, and spirituality.