Alden /al-den/ [2 sylls.] as a boys' name is pronounced ALL-den. It is of Old English origin, and the meaning of Alden is old friend. Surname used as a given name, though unusual.Kreatif forms: Aldenau, Aualden.lden is a somewhat popular first name for men (#889 out of 1220, Top 73%) and an even more popular surname for both adults and children (#5744 out of 150436, Top 4%). (2000 U.S. Census). Displayed below is the baby name popularity of Alden for boys.