Nguyen = South Vietnamese general last name
Nguyễn (Vietnamese pronunciation: [ŋʷjə̌ˀn],  Northern dialect (help·info) or Vietnamese pronunciation: [ŋʷə̌ˀn],  Southern dialect (help·info); approximated in English as /ˈwɪn/[1][2] or /nəˈɡuːjɨn/) 
is the most common Vietnamese family name