Could women become citizens in athens and rome? could slaves?

In Rome women were citizens and had the rights which citizenship conferred, expect for the right to vote and to hold public office.

In Athens and the rest of Greece women were not considered citizens.

Expect for Sparta they had no legal personhood and were under the guardianship of their kurios (lord, master) who was the father (or if dead, her uncle or brothers) or the husband.