| Name | Meaning | Gender | Origin |
| Katlin | Medieval English Form Of The Irish Caitlin. Pure | Female | English |
| Katlyn | Medieval English Form Of The Irish Caitlin. Pure | Female | English |
| Katlynn | Medieval English Form Of The Irish Caitlin. Pure | Female | English |
| Katlynne | Medieval English Form Of The Irish Caitlin. Pure | Female | English |
| Kayce | Modern Kacie And Variants Are Phonetic Forms Of The Initials K.C. Or Variants Of The Irish Name Casey Alert: Vigorous. | Female | English |
| Kaycee | Modern Kacie And Variants Are Phonetic Forms Of The Initials K.C. Or Variants Of The Irish Name Casey Alert: Vigorous. | Female | English |
| Kayci | Modern Kacie And Variants Are Phonetic Forms Of The Initials K.C. Or Variants Of The Irish Name Casey Alert: Vigorous. | Female | English |
| Kaycie | Modern Kacie And Variants Are Phonetic Forms Of The Initials K.C. Or Variants Of The Irish Name Casey Alert: Vigorous. | Female | English |
| Keira | Feminine Of The Irish Gaelic Kieran. Dusky: Dark-Haired. | Female | Irish |
| Kevin | Handsome Child. Name Of A Famous Irish Hermit-Saint. Kevin Is The Most Popular Of Many Spellings. | Male | Irish |
| Kiera | Feminine Of The Irish Gaelic Kieran. Dusky: Dark-Haired. | Female | Irish |
| Kitlyn | Medieval English Form Of The Irish Caitlin. Pure | Female | English |
| Laetitia | Irish Form Of Letitia Happy | Female | Irish |
| Leana | Derived From An Irish Gaelic Of Helen: (Light:Beautiful Woman): Variant Of Liana: (Youthful:Bond). | Female | English |
| Leann | Derived From An Irish Gaelic Of Helen: (Light:Beautiful Woman): Variant Of Liana: (Youthful:Bond). | Female | English |
| Leanna | Derived From An Irish Gaelic Of Helen: (Light:Beautiful Woman): Variant Of Liana: (Youthful:Bond). | Female | English |
| Leanne | Derived From An Irish Gaelic Of Helen: (Light:Beautiful Woman): Variant Of Liana: (Youthful:Bond). | Female | English |
| Leeann | Derived From An Irish Gaelic Of Helen: (Light:Beautiful Woman): Variant Of Liana: (Youthful:Bond). | Female | English |
| Leeanne | Derived From An Irish Gaelic Of Helen: (Light:Beautiful Woman): Variant Of Liana: (Youthful:Bond). | Female | English |
| Leianna | Derived From An Irish Gaelic Of Helen: (Light:Beautiful Woman): Variant Of Liana: (Youthful:Bond). | Female | English |
| Lynley | Abbreviation Of Lynnette Who Accompanied Sir Gareth On A Knightly Quest In Arthurian Legend: Variant Of The Irish Gaelic Word Lann Meaning House: Church. | Female | Arthurian |
| Lynna | Abbreviation Of Lynnette Who Accompanied Sir Gareth On A Knightly Quest In Arthurian Legend: Variant Of The Irish Gaelic Word Lann Meaning House: Church. | Female | English |
| Madailein | Irish Forms Of Madeleine Magnificent | Female | Irish |
| Maighdlin | Irish Forms Of Madeleine Magnificent | Female | Irish |
| Nainsi | Irish Form Of Nancy Graceful | Female | Irish |
| Nigel | Champion From The Irish And Scottish Niall. | Male | English |
| Nijel | Champion From The Irish And Scottish Niall. | Male | English |
| Nygel | Champion From The Irish And Scottish Niall. | Male | English |
| O | Descendent Of. Irish Surnames Formed By Prefacing O'. | Male | Irish |
| Parnel | Nineteenth-Century Irish Nationalist Charles Parnell. | Male | Irish |