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241 Unisex Names That Start With O (With Meanings and Popularity)

Pamela Redmond
By Pamela Redmond
Updated Fri Jan 30 2026
241 Unisex Names That Start With O (With Meanings and Popularity)

Unisex names that start with O are flying high in the style stakes right now, with other O-starting choices like Oliver and Olivia, Owen and Oaklynn at an all-time high.

Two up-and-coming unisex O names, Oakley and Ocean, rank among the most popular unisex names to achieve an almost-equal gender split, making either one an awesome androgynous choice.

Here, our full selection of unisex names that start with O, ordered by their current popularity on Nameberry. Each name is used more often for the gender indicated by its heart.

RELATED:

Unisex Names

Baby Names A-Z

  1. Opha

    • Origin:

      Greek, Hebrew

    • Meaning:

      "help; fawn"
  2. Ophelia

    • Origin:

      Greek

    • Meaning:

      "help"
  3. Olivia

    • Origin:

      Latin

    • Meaning:

      "olive tree"
  4. Oscar

    • Origin:

      English or Irish

    • Meaning:

      "God spear, or deer-lover or champion warrior"
  5. Oliver

    • Origin:

      Germanic, Latin

    • Meaning:

      "elf army; ancestor's relic; olive tree"
  6. Owen

    • Origin:

      Welsh

    • Meaning:

      "young warrior; well-born"
  7. Otto

    • Origin:

      German

    • Meaning:

      "wealthy"
  8. Otis

    • Origin:

      Variation of Otto, German

    • Meaning:

      "wealthy"
  9. Orion

    • Origin:

      Greek

    • Meaning:

      "boundary, limit"
  10. Octavia

    • Origin:

      Latin

    • Meaning:

      "eighth"
  11. Olive

    • Origin:

      English, from Latin, nature name

    • Meaning:

      "olive tree"
  12. Odessa

    • Origin:

      Russian form of Odesa, Ukrainian place-name

    • Meaning:

      "voyage"
  13. Opal

    • Origin:

      Sanskrit

    • Meaning:

      "gem"
  14. Orla

    • Origin:

      Irish

    • Meaning:

      "golden princess"
  15. Onyx

    • Origin:

      Word name

    • Meaning:

      "gem stone; claw, nail"
  16. Osiris

    • Origin:

      Egyptian

    • Meaning:

      "with strong eyesight"
  17. Oakley

    • Origin:

      English

    • Meaning:

      "oak wood or clearing"
  18. Oberon

    • Origin:

      Variation of Auberon

    • Meaning:

      "elf king; noble bear"
  19. Oren

    • Origin:

      Hebrew

    • Meaning:

      "laurel or pine tree"
  20. Ozzy

    • Origin:

      Pet form of Oswald, Osborn, Osmond or Oscar, English

    • Meaning:

      "divine; deer"

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