Meaning & Story
A short form of Osian or Ossian, an Irish and Welsh name meaning little deer, from the Old Irish os meaning deer, evoking swiftness and grace.
Osi is a trim, melodic name rooted in Celtic mythology through Oisin, the legendary Irish poet and warrior, son of Fionn mac Cumhaill. The short form is easy to call and has a lyrical quality that distinguishes it from plainer names. Dogs named Osi often have a deer-like quality — quick, graceful, and alert to their surroundings. The name carries a poetic weight that makes it feel special without being showy. It is a lovely choice for owners who appreciate Celtic heritage and quiet elegance.