Rare variant possibly related to Ethan (Hebrew 'strong, enduring') or Otho (Germanic 'wealth').
Othan is a rare variant possibly related to Ethan, meaning strong or enduring, or Otho, from Germanic roots associated with wealth. That uncertainty gives the name a layered and somewhat historical feel, as if it stands near several older traditions at once.
It sounds compact, serious, and slightly antique. Because it is uncommon, Othan has the kind of simplicity that can make a name memorable without making it flashy. It feels sturdy and masculine, with a low-key formality that suggests age and substance.
The ambiguity of its origin is part of its charm, since the name seems to invite different historical echoes. Othan carries the impression of strength, whether through endurance or prosperity.