Sander

Dutch and Scandinavian, diminutive of Alexander
"defending men"

Sander Origin and Meaning

The name Sander is a girl's name meaning "defending men".

Sander would be an unconventional short form of Alexandra, variation of Sandra, or surname-name for girls. It was given to 41 baby boys in the US last year but no girls, but it certainly can be a gender-neutral choice.