Bill Gates was born on October 28, 1955 and is currently 60 years old. He is married to Melinda Gates and has three children. There names are Jennifer Katharine Gates, Rory John Gates, and Phoebe Adele Gates. Gates is an American business magnate, investor, author, and philanthropist. He is best known for co-founding Microsoft and being the richest man in the world. Microsoft is the worlds largest PC software company.