Aison

Jason is the better known name and the more familiar mythological figure, but if you're wanting something rare, Aison (or Aeson) could make an interesting choice. Borne by the father of Jason (and a king of Thessaly), there are two varying myths around Aison, one being that he was imprisoned by his half-brother Pelias, and the other that he was killed by Jason's wife Medea and brought back to life again as a young man.

This particular form is notably associated with the red-figure vase painter and is traditionally pronounced as EE-sohn. The exact meaning is unknown, though there is a chance that it may relate to Iason, the source of Jason, which means "to heal".

Aison has been appearing in the US stats since 2005, though whether it's being used because of its Greek origins or whether parents are choosing it as a mix of Aiden, Kaison, Mason, and similar, is hard to know. As such, you may hear it said as AY-suhn or EYE-suhn too.

Pronounced AY-sun.

As of October 2026, Aison ranked #8938 for boys in US births in 2025 SSA, peaked at #4987 for boys in 2013.