Osiah is a rare and distinctive given name of Hebrew origin, meaning "helper" or "assistant." It appears in the Old Testament as the name of several individuals, most notably in the Book of Isaiah where it is spelled differently but believed to have the same root meaning. In medieval times, variations like Ozias were used, which later evolved into the English form Osiah. This name is not particularly common today and may therefore confer a unique identity upon its bearers.
"The name Osiah saw a significant increase in popularity from 2015 onwards, with births nearly tripling between 2015 and 2022."