Aldrin \a-ld-rin, al-drin\ as a boy's name is a variant of Aldrich (Old English), and the meaning of Aldrin is "old". The baby name Aldrin sounds like Aldric, Aldred, Eldrid and Aldrige. Other similar baby names are Adrin, Aldwin and Aldin. View a list of the 3 names that reference Aldrin.