Aldwin \a-ld-win, al-dwin\ as a boy's name is of Old English origin, and the meaning of Aldwin is "old friend". Variant of Alden. Aldwin has 10 variant forms: Aldwinn, Aldwinne, Aldwyn, Aldwynne, Alswynn, Elden, Eldin, Eldwin, Eldwyn and Eldwynn. Baby names that sound like Aldwin are Aldin, Aldwynn, Aldan and Aldon. View a list of the 2 names that reference Aldwin.