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Nóirín is an Irish-language diminutive of Nóra, itself a short form of the Latin name Honoria, derived from the Latin word honor meaning dignity or esteem. The diminutive suffix ín, common in Irish naming tradition, conveys affection and endearment, giving the name a sense of little Nóra. The name has been used in Ireland for centuries and remains associated with Irish-speaking communities and the broader Gaelic cultural revival. Related forms include Nóra, Honoria, and the Anglicized Noreen.