Irish Names starting with “O”

International names bring sounds, origins and stories from all over the world into your name search.

Irish Names starting with

Name	m/f/u	Origin	Meaning
Oisin	m		Oisin, a masculine first name, represents the anglicized variant of the historical Iris…
Oonagh	f	Latin	The name Oonagh has its roots in Gaelic and Irish and carries two different meanings
Oran	m	Irish	The name Oran has its roots in the Irish name Odhrán and derives from the word odhar, w…
Oranna	f		Oranna is the feminine derivative of the Irish name Oran, which can be traced back to t…
Orin	m		Orin is an American form of the Irish Gaelic name Odran, which means 'the dark-haired o…
Orla	f	English	Orla, a girl's name, is the English equivalent of the Irish Orlaith, which is derived f…
Orlaith	f		Orlaith (Órlaith) is a feminine name that derives from the Irish name Orfhlaith
Oscar	m	Celtic	The name Oscar has both Nordic and Irish origins
Oscarina	f		The meaning of Oscarina as a Latin American variation of the name Oscar is multifaceted
Osian	m	Welsh	The name Osian, a Welsh form of Oisin, carries the meaning 'the little deer'
Ossian	m		Ossian is a derived form of Oisin, a warrior and hero from Irish legends
Owen	m	Celtic	Owen is a male first name widely used in English-speaking regions