Is Zac a Jewish name?

Yes. Zackariah is a Jewish name and Zac is it's nickname.

Is Zac a Jewish name?
Zachary is a name that is relatively often given to infants by Jewish parents; however, there's nothing that says a child has to be Jewish to receive the name. It's just a biblical name, and we Jews often name our children after deceased ancestors we'd like to honor and/or biblical figures.
Reply:Yes, it means, god remembers.