The name Osias is a boy's name of Greek origin meaning "salvation". Osias and is often added to lists like Names to Substitute for Oscar and discussed in our forums with posts like "Quick Question Thread?!".
From the experts:
Osias has a Latinate and biblical feel without making an appearance in the Bible. The related Ozias, on the other hand, is a form of Uzziah, found in the Greek and Latin Old Testament, and could make a distinctive path to the nickname Oz or Ozzie--both far cooler, in our opinion, than Oswald.