Likely a diminutive-style form related to Sasha, ultimately from Alexander and meaning 'defender of mankind.'
Sasia is likely a diminutive-style form related to Sasha, ultimately from Alexander and meaning defender of mankind. That gives the name a surprisingly strong historical base beneath its light and modern surface.
The name feels compact, playful, and contemporary. Sasia has the softness of a modern feminine form, but the Alexander connection gives it depth and resilience. It is rare, and that rarity helps it feel polished rather than merely informal.