​
​
Advanced Search

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. Oscar

    • Origin:

      English or Irish

    • Meaning:

      "God spear, or deer-lover or champion warrior"
  4. Olivia

    • Origin:

      Latin

    • Meaning:

      "olive tree"
  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. Orion

    • Origin:

      Greek

    • Meaning:

      "boundary, limit"
  9. Olive

    • Origin:

      English, from Latin, nature name

    • Meaning:

      "olive tree"
  10. Otis

    • Origin:

      Variation of Otto, German

    • Meaning:

      "wealthy"
  11. Orla

    • Origin:

      Irish

    • Meaning:

      "golden princess"
  12. Opal

    • Origin:

      Sanskrit

    • Meaning:

      "gem"
  13. Octavia

    • Origin:

      Latin

    • Meaning:

      "eighth"
  14. Odessa

    • Origin:

      Russian form of Odesa, Ukrainian place-name

    • Meaning:

      "voyage"
  15. Ozzy

    • Origin:

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

    • Meaning:

      "divine; deer"
  16. Oren

    • Origin:

      Hebrew

    • Meaning:

      "laurel or pine tree"
  17. Onyx

    • Origin:

      Word name

    • Meaning:

      "gem stone; claw, nail"
  18. Oberon

    • Origin:

      Variation of Auberon

    • Meaning:

      "elf king; noble bear"
  19. Oakley

    • Origin:

      English

    • Meaning:

      "oak wood or clearing"
  20. Orin

    • Origin:

      Variation of Oren or Oran, Hebrew, Irish, Scottish

    • Meaning:

      "laurel, light, song, little green one"

Introducing the Nameberry App

Nameberry App
Find your perfect baby name together with our new mobile app.
  • Swipe through thousands of names with your partner
  • Names you match on are saved to your shared list
  • Get personalized recommendations that learn based on your and your partner's preferences
  • Partner with friends and family to find names you all love
  • Backed by Nameberry's 20 years of data around name preferences.
Sign up to be notified when the app launches and to receive a discount on full access.
Nameberry App Logo