The first name Zandra is of Greek, English, Spanish origin. It is often a girl name. It has the following meaning(s):
Greek: Defender of All
English: Defender of Mankind. Feminine of Alexander
Greek: Diminutive of Alexandra: a Feminine Form of Alexander Meaning Defender of Men, Used in Britain Since Early; it Became Popular After the Marriage of the Marriage of Future King Edward Vii to Princess A
Spanish: Variant of Alexandra: Defender of Mankind