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Best One-of-a-Kind Names for Girls

Sophie Kihm
By Sophie Kihm
Updated Sun May 04 2025
Best One-of-a-Kind Names for Girls

Rare girl names that nobody (literally!) in the US include the following, all ranking below the five-baby cutoff necessary to make the Social Security extended list.

Among the coolest rare girl names are vintage gems such as Leocadia, Ottoline, Effia, and Zephyrine. Other literally unique girl names include hot international choices Madelief, Lowri, and Petronilla, and nature names Freesia, Quarry, and Plum.

Among these one-of-a-kind girl names are many classic choices as well as new and unusual name ideas.

If you want a truly rare name for your baby girl, here are our suggestions, ordered by their current popularity on Nameberry.

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  1. Ianthe

    • Origin:

      Greek

    • Meaning:

      "purple flower"

    • Description:

      Like Violet, Lavender and Lilac, Ianthe is a purple flower name. Chosen by the poet Shelley for his daughter, Ianthe has a poetic, romantic, almost ethereal quality. In the ancient myth, she was the daughter of Oceanus, supreme ruler of the sea, and also a Cretan woman so beautiful that when she died the Gods made purple flowers grow around her grave.
  2. Zephyrine

    • Origin:

      Feminine variation of Zephyr, Greek

    • Meaning:

      "west wind"

    • Description:

      Zephyr may not be a name often heard in the U.S., but its variations are used throughout Europe. Zephyrine, a cousin in sound and feel if not in fact to such lovely names as Severine and Seraphina, has distinctive possibilities.
  3. Eluned

    • Origin:

      Welsh

    • Meaning:

      "idol, image"

    • Description:

      Romantic and mysterious, Eluned's beauty and intelligence were legendary in Welsh legend; she was the handmaiden of the Lady of the Fountain in a Welsh Arthurian romance, who had a magic ring that made the wearer invisible. Pronunciation is usually similar in emphasis to Eleanor, but with ned instead of nor at the end. However, it's sometimes also pronounced el-LIN-ed or even shortened to Luned, the sounce of Lynette, in Tennyson's Gareth and Lynette.
  4. Endellion

    • Origin:

      Cornish place and saint's name

    • Meaning:

      "fire soul"

    • Description:

      Endellion is the name of an early saint who was a daughter of King Brychan and goddaughter of King Arthur whose life is commemorated by the Cornish village of St. Endellion. This intriguing ancient name was brought into modern usage by British Prime Minister David Cameron, who used it as one of the middle names for his fourth child, a baby girl.
  5. Delphi

    • Origin:

      Greek place name

    • Meaning:

      "of Delphi; womb"

    • Description:

      An interesting unisex possibility, with an air of mystery connected to the Delphic Oracle, the most important oracle in ancient Greece; it was also a major site for the worship of the god Apollo.
  6. Alouette

    • Origin:

      French

    • Meaning:

      "lark"

    • Description:

      Alouette is a sweet Gallic twist in the stylish bird name genre made familiar via the charming French children's song, Alouette, gentile alouette.
  7. Bluebell

    • Origin:

      Flower name from English

    • Meaning:

      "blue bell"

    • Description:

      Bluebell is one flower name that is used very quietly. Geri "Ginger Spice" Halliwell joined her former Spice Sisters in creative baby-naming with this adventurous — some might say outlandish — choice. Andie MacDowell has a granddaughter named Bluebell Coyote through her daughter Rainey Qualley.
  8. Sidonie

    • Origin:

      Latin

    • Meaning:

      "from Sidon "

    • Description:

      Sidonie is an appealing and chic French favorite that is starting to attract some American fans as a fresher alternative to Sydney. Also spelled Sidony, Sidonie was the birth name of the French novelist Colette.
  9. Kerensa

    • Origin:

      Cornish

    • Meaning:

      "love"

    • Description:

      Kerensa, forever romantic, is a rare Cornish name spelled with an 's' or 'z', the most modern of the Karen family. Kerensa (or Kerenza) has ties to the Welsh Cerys.
  10. Pomeline

    • Origin:

      French, related to "apple"

    • Meaning:

      "apple"

    • Description:

      A rarely heard--even in France--name, most prominent as the third name of Charlotte Marie Pomeline Casiraghi, the daughter of Princess Caroline of Monaco and granddaughter of Grace Kelly.
  11. Cia

    • Origin:

      Diminutive of Cynthia

    • Description:

      What's Cia short for? Cynthia or most any other C-name. Stylish in its sleek Mia-Nia minimalist feel, but may remind some of the Central Intelligence Agency.
  12. Nephele

    • Origin:

      Greek

    • Meaning:

      "cloudy"

    • Description:

      An enchanting ancient Greek name belonging to the Greek goddess who was created from a cloud by Zeus and so became goddess of the clouds and mother of the centaurs. The name Nephele is not widely known but as among modern parents become used to Phoebe, Penelope, and Persephone, it may become one of the ancient Greek goddess names that's back in the mix.
  13. Thessaly

    • Origin:

      Greek, place name, meaning unknown

    • Description:

      The name of an area in northern Greece, known in the era of Homer's Odyssey as Aeolia, Thessaly makes a spirited and pretty place name. Reminiscent of Tessa, Rosalie, and Thea, the name likely derives from that of an ancient tribe, though the exact meaning isn't known.
  14. Olwen

    • Origin:

      Welsh

    • Meaning:

      "white footprint"

    • Description:

      Olwen is a Welsh favorite, the name of a legendary princess in what is believed to have been the earliest Arthurian romance, and in fact one of the first recorded examples of Welsh prose.
  15. Desdemona

    • Origin:

      Greek

    • Meaning:

      "ill-starred"

    • Description:

      Desdemona is as Shakespearean as a name can be, but because the beautiful and innocent wife of Othello came to such a tragic end, her name has been avoided for centuries. But at this point in time, there might be some adventurous parents willing to overlook that.
  16. Leocadia

    • Origin:

      Spanish

    • Meaning:

      "splendid brightness"

    • Description:

      Leocadia marries a mix of sounds: the strength of a lion, with a rhythmic Latin ending.
  17. Liliosa

    • Origin:

      Spanish

    • Meaning:

      "lily"

    • Description:

      Liliosa, one of the most extravagant forms of the ever-more-popular and varied Lily family, is an ancient saint's name that's a perfect candidate for revival by parents who love the double-L flower name trend but want a distinctive variation. Saint Liliosa was one of the martyrs of 9th century Cordoba, along with her husband Felix and cousins Aurelius and Natalia — all names newly fashionable in the modern world.
  18. Cerelia

    • Origin:

      Latin

    • Meaning:

      "relating to springtime"

    • Description:

      Cerelia is a melodic and unusual choice, perfect for a child born in April or May. Another version is Cerella.
  19. Citrine

    • Origin:

      Gemstone name

    • Description:

      Citrine is a type of quartz named after its citrus-colored hues. if Amethyst, Jasper, and Onyx (all other types of quartz) can be used, why not Citrine, which has a lovely French-sounding suffix. Citrine is one of the many rare and attractive girl names starting with C.
  20. Anemone

    • Origin:

      Flower name; Greek

    • Meaning:

      "daughter of the wind"

    • Description:

      Anemone is a floral name that relates to the ancient Greek myth of the famous love story of Aphrodite and Adonis, in which Aphrodite transforms her wounded lover's blood into a flower, the crimson anemone, whose blossoms are opened by the wind — accounting for its other name, windflower.