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Irish Names that Start With O

  1. O'fallon
    • Origin:

      Irish
    • Meaning:

      "son of the leader"
    • Description:

      Fallon has gone feminine, but this puts it back in the boys' camp.
  2. Oilibhear
    • O'grady
      • Origin:

        Irish
      • Meaning:

        "son of the noble one"
      • Description:

        Like the other O' names, this is a wonderful way to pass down a family name.
    • O'donnell
      • Origin:

        irish
      • Meaning:

        "son of the brave one"
      • Description:

        Forget Donald. Honor Grandpa Don with this new spin.
    • O'keefe
      • Origin:

        Irish
      • Meaning:

        "son of the kind one"
      • Description:

        Most parents interested in this name would be honoring either an ancestor or painter Georgia O'Keeffe.
    • O'shea
      • Origin:

        Irish
      • Meaning:

        "hawklike, stately"
      • Description:

        One of the jauntiest o' the O' names, the birth name of actor/ rapper Ice Cube.