Isaias is a ♂ male name.
The name Isaias is a Latin, Greek, Spanish and Portuguese form of the biblical name Isaiah, which derived from the Hebrew name Yesha’yahu / יְשַׁעְיָהוּ.
Isaias means “Yahweh is salvation” (from “yeho/יְהוֹ” = referring to the Hebrew God + “yasha’/יָשַׁע’” = to save).