Looking for a Japanese name that starts with O? You have picked a great letter. Names with O are short, soft, and easy to say. Many of them also have deep meanings tied to nature, strength, and beauty.
This list has boy, girl, and unisex names. Some are old and traditional, like Osamu and Otoha. Others feel fresh and modern. Each name comes with its meaning, so you can see what it stands for.
Maybe you are naming a baby, building a character, or just love Japanese culture. Either way, you will find something here that fits. Let’s get started and find the right O name for you.
Why Japanese Names Starting With O Stand Out
Names that start with O have a calm and gentle sound. They are short and easy to say. Many link to nature, the moon, flowers, and old Japanese tradition. That makes them feel both fresh and timeless.
Japanese Names That Start With O Generator
šÆšµ Japanese Names That Start With O Generator
Generate beautiful, traditional, modern, unique, and meaningful Japanese names starting with O instantly.
Want to build your own name? Pick a start and an ending, then join them. Try Ori + ko, Oto + ya, or Oka + mi. Here are 10 ready-made ideas.
- Orako
- Osayo
- Otoka
- Okeji
- Ohimi
- Omaru
- Ogiha
- Onemi
- Ofuno
- Oyuma
Japanese Names That Start With O
Here is a mixed list for anyone who wants a quick pick. These names sound smooth and simple. Some feel old, and some feel new.
- Obiko
- Ochika
- Ochiyo
- Odaka
- Odayo
- Odori
- Oemi
- Ofuka
- Ofumi
- Ogame
- Ogari
- Ogisa
- Ohako
- Ohama
- Ohoko
- Ohomi
- Oichi
- Oiko
- Oimi
- Oisa
- Oito
- Ojiko
- Okaho
- Okahi
- Okako
- Okamu
- Okane
- Okari
- Okasa
- Okata
- Okayu
- Okeno
- Okezo
- Okimu
- Okino
- Okise
- Okita
- Okiya
- Okobe
- Okogi
- Okomi
- Okona
- Okori
- Okosa
- Okota
- Okuha
- Okumi
- Okune
- Okuya
- Omaki
Japanese Names That Start With O Girl
Girl names with O are soft and graceful. Many mean flower, moon, or music. They suit a gentle and kind personality.
- Oharu
- Ohana
- Ohisa
- Okiku
- Okimi
- Okiyo
- Okoto
- Okuni
- Omiyo
- Onatsu
- Orie
- Orika
- Orino
- Orito
- Osaki
- Otoe
- Otoha
- Otohime
- Otomi
- Otome
- Oyuki
- Oyone
- Ouka
- Oumi
- Ouri
- Ozuki
- Oka
- Omi
- Oran
- Oshie
- Otsuki
- Otsune
- Oyoshi
- Oyasu
- Ohatsu
- Ofuyu
- Oaki
- Oasa
- Oayu
- Obana
- Odoka
- Ogiku
- Oharuka
- Ohikari
- Ohinata
- Okaede
- Okana
- Okasumi
- Okazuki
- Okei
Japanese Names That Start With O Boy
Boy names with O sound calm but strong. They often show honor, wisdom, or loyalty. These work well for a quiet leader.
- Osamu
- Osuke
- Oto
- Otoya
- Otohiko
- Otojiro
- Otosuke
- Otokichi
- Ouki
- Ouma
- Ouga
- Ousei
- Ousuke
- Outa
- Oji
- Okito
- Okiyoshi
- Okihiro
- Okimasa
- Okinori
- Okitaka
- Omito
- Omikazu
- Onosuke
- Oryu
- Osei
- Oshin
- Osho
- Otaru
- Otaro
- Otasuke
- Otomaru
- Otsugu
- Oyuta
- Ogai
- Ohei
- Oisuke
- Okio
- Okimitsu
- Oraku
- Orochi
- Osamichi
- Oshiro
- Otohei
- Ouji
- Ozora
- Ogen
- Ohiro
- Okazu
- Ontaro
Japanese First Names That Start With O
These first names mix old and modern styles. Some use the “Oh” spelling, which is also common. Pick the spelling that looks best to you.
- Orihime
- Oriha
- Orihi
- Osara
- Osaya
- Osato
- Osuna
- Osumu
- Otosa
- Otoni
- Ouhei
- Ouyo
- Ohiko
- Ohito
- Ohiya
- Ohiyu
- Ohmi
- Ohsei
- Ohtaro
- Ohki
- Ohsuke
- Ohnari
- Oryo
- Okaru
- Ogami
- Ogaku
- Ogenta
- Ogita
- Ogiya
- Ogomi
- Ogure
- Ohachi
- Ohaya
- Ohiji
- Ohisu
- Ohomu
- Ohoru
- Oimu
- Oitsu
- Ojiro
- Ojin
- Ojun
- Okaji
- Okaki
- Okare
- Okeru
- Oketsu
- Okinaga
- Okirei
- Okisa
- Okizo
Japanese Last Names That Start With O
Many famous Japanese surnames start with O. Most come from places, rivers, and land features. You can use these for characters, stories, or research.
- Ochiai
- Oda
- Odagiri
- Ogasawara
- Ogata
- Ogawa
- Ogino
- Ogura
- Oguri
- Ohashi
- Ohara
- Ohata
- Ohba
- Ohkubo
- Ohmori
- Ohno
- Ohsawa
- Ohshima
- Ohta
- Ohtani
- Oikawa
- Oishi
- Okabe
- Okada
- Okamoto
- Okamura
- Okano
- Okawa
- Okazaki
- Okubo
- Okuda
- Okumura
- Okura
- Okuyama
- Onishi
- Onoda
- Onodera
- Osada
- Osako
- Oshima
- Osugi
- Otake
- Otani
- Otsuka
- Ouchi
- Oyama
- Ozaki
- Ozawa
- Ozeki
- Ohmura
Good Japanese Names That Start With O
A good name has a nice meaning and a smooth sound. These names feel warm and respectful. They fit people who want a name with real depth.
- Otoharu
- Otokiyo
- Otonari
- Otohisa
- Otoyuki
- Otoshige
- Otomasa
- Otofumi
- Otonami
- Otomiya
- Otosato
- Otokazu
- Otoaki
- Otomitsu
- Otonaga
- Otosumi
- Otoharuka
- Otoyoshi
- Otomune
- Otsukasa
- Oyuka
- Oyumi
- Oyuko
- Oyune
- Oyuhi
- Oyukina
- Osahiro
- Osaharu
- Osakazu
- Osamasa
- Osanori
- Osatoshi
- Osayuki
- Osayasu
- Osahiko
- Osajiro
- Okiharu
- Okikazu
- Okitomo
- Okiyuki
- Okimune
- Okinao
- Okiaki
- Omiharu
- Omiyuki
- Omitaka
- Omihiro
- Omiko
- Omikage
- Omimasa
Japanese Names That Start With O on WhatsApp
On WhatsApp, short names look clean and neat. They are also easy for friends to find. Here are short and stylish picks for your profile.
- Oma
- Ori
- Oru
- Ose
- Osu
- Ote
- Oya
- Oha
- Ohi
- Ohu
- Oho
- Oke
- Oko
- Oku
- Ome
- Omo
- Omu
- Ona
- Onu
- One
- Ora
- Ore
- Oro
- Oyu
- Oza
- Ozo
- Ozaya
- Orami
- Oriko
- Orisa
- Orimi
- Orina
- Orita
- Oruka
- Oruma
- Orune
- Osami
- Osaha
- Osuka
- Osune
- Otaka
- Otahi
- Otaye
- Otema
- Otera
- Otemi
- Otomu
- Otoru
- Otoshi
- Otsuha
- Otsuyo
Japanese Names That Start With O on Snapchat
Snapchat names should feel bold and fun. Pick a name that is easy to spell and easy to remember. These ones have a cool and playful vibe.
- Ocha
- Ochiba
- Ochimi
- Ochino
- Ochiru
- Odai
- Odake
- Odaki
- Odama
- Odate
- Odayu
- Odei
- Odemi
- Odeni
- Odeno
- Ofuna
- Ofune
- Ofuri
- Ogaru
- Ogato
- Ogeta
- Ogimi
- Ohazu
- Ohebe
- Ohiki
- Ohimu
- Oibi
- Oidai
- Oikei
- Oimo
- Oirai
- Oisen
- Oizen
- Ojika
- Ojima
- Ojire
- Ojuka
- Okabi
- Okadai
- Okaen
- Okagi
- Okaiko
- Okamio
- Okanae
- Okanei
- Okaoru
- Okaryu
- Okasei
- Okatora
- Okazen
Japanese Names That Start With O on Instagram
Instagram is all about style. Soft and dreamy names look great in a bio. These names have a calm, artistic feel.
- Otogi
- Otsukimi
- Ohanami
- Ohigan
- Okagami
- Oshiroi
- Ozakura
- Omizu
- Omamori
- Orikaze
- Orihana
- Orizuki
- Orihoshi
- Orisora
- Orimizu
- Oritsuki
- Orisui
- Oriyuki
- Oriran
- Orisaki
- Oriyo
- Orihaya
- Oriyuu
- Oriharu
- Orisumi
- Orikoto
- Orimai
- Oriwa
- Oyozora
- Oyukimi
- Oyuzuki
- Oyuhana
- Ohizuki
- Ohiyori
- Ohikage
- Ohisora
- Ohiyume
- Oakari
- Oasuka
- Oazusa
- Oazumi
- Oayame
- Oayako
- Oayano
- Oamane
- Oamika
- Oaoi
- Oaoba
- Oasahi
- Oasayo
Cute Japanese Names That Start With O
Cute names are sweet and light. Many repeat a sound, like Omomo. They are great for babies, pets, and anime characters.
- Omochi
- Omame
- Omomo
- Okiki
- Oyoyo
- Ototo
- Orara
- Oruru
- Oriri
- Ononi
- Omimi
- Ohiru
- Ohimeko
- Ohimari
- Ohinako
- Ohinami
- Ohinari
- Ohiyoko
- Omanju
- Omikuji
- Oharuna
- Oharumi
- Oharuko
- Ohanako
- Ohanae
- Ohanano
- Ohanari
- Ohanemi
- Ohanoka
- Ohonoka
- Okanoka
- Okamomo
- Okamiko
- Okanami
- Okanaho
- Okanako
- Okanari
- Okanoa
- Okamina
- Okamiyu
- Okamoe
- Okayume
- Okayuki
- Okayuna
- Okayuri
- Okayuzu
- Okayuyu
- Okayoi
- Okayori
- Okahina
- Okahane
Unique Japanese Names That Start With O
Want something nobody else has? These names are rare and eye-catching. Many start with “Ou,” which gives a long and deep sound. They are perfect for a one-of-a-kind pick.
- Ouen
- Ouhi
- Oujo
- Oukei
- Oumei
- Ounin
- Ourai
- Ousen
- Oushi
- Outen
- Ouyu
- Ouzan
- Ouzen
- Ouko
- Oukou
- Ouhaku
- Ouryu
- Ouetsu
- Oukai
- Ouryo
- Ousho
- Oushin
- Ousui
- Outai
- Outoku
- Ouyou
- Ouboku
- Ouchou
- Oudai
- Ouei
- Ougai
- Ougen
- Ougetsu
- Ouhou
- Oujaku
- Oukyo
- Ourin
- Ousaku
- Ousetsu
- Ousoku
- Outaku
- Outou
- Ouwa
- Owari
- Ozuka
- Ozuna
- Ozune
- Ozuru
- Ozuyo
- Ozuhi
Unisex Japanese Names That Start With O
Unisex names work for anyone. They are simple, balanced, and modern. Here are 50 names that fit both boys and girls.
- Oboro
- Ochi
- Oen
- Ogi
- Ohka
- Oi
- Okami
- Okaze
- Oki
- Okina
- Okuri
- Omori
- Omoi
- Omoide
- Onami
- Ono
- Oori
- Orai
- Oren
- Orin
- Oriya
- Osa
- Oshi
- Ota
- Ouan
- Ouya
- Oyo
- Ozu
- Ozumi
- Ozen
- Ohori
- Okaya
- Okihira
- Okuyo
- Omika
- Omine
- Omiya
- Omura
- Onari
- Onoe
- Oriki
- Orime
- Osora
- Otori
- Otowa
- Oyuna
- Oyami
- Ohane
- Ohoshi
- Onoki
Popular Japanese Names That Start With O
These names were common in Japan’s past, especially in the Edo period. Many used “O” as a polite prefix. They still feel classic and graceful today.
- Omatsu
- Oume
- Otama
- Otoyo
- Otaki
- Otsuna
- Osen
- Ohyaku
- Otsuru
- Osode
- Otsugi
- Osuzu
- Otane
- Otsuya
- Okichi
- Okatsu
- Okiwa
- Okinu
- Okuma
- Onobu
- Okayo
- Onaka
- Ofusa
- Ofuji
- Oshizu
- Otami
- Osono
- Osumi
- Otomo
- Osawa
- Otake
- Oroku
- Orei
- Ofuku
- Onui
- Oteru
- Oyae
- Otoki
- Osuga
- Obun
- Ochie
- Omasa
- Orui
- Otsuta
- Osuki
- Okuru
- Omitsu
- Oyuri
- Otsumi
- Okoma
Rare Japanese Names That Start With O
Rare names have a noble and old feel. Many sound like they belong in a historical story. Use them for fantasy, fiction, or a truly special choice.
- Otohata
- Otomae
- Otsuhime
- Okihime
- Okiyome
- Okitoki
- Okinami
- Okinoko
- Okinomi
- Okimaro
- Omaro
- Omaromi
- Omiji
- Omiyoshi
- Omiyuru
- Onomaro
- Onotsugu
- Onoyuki
- Onoharu
- Orimaro
- Orimune
- Orisada
- Oritane
- Oritsugu
- Osamaro
- Osamune
- Osatsugu
- Osayoshi
- Otomaro
- Otoyasu
- Otsumaro
- Ouchimaro
- Oyumaro
- Oyoshihime
- Oyasuhime
- Oharuhime
- Ohanahime
- Okuhime
- Omihime
- Onohime
- Osuzuhime
- Otamahime
- Otokihime
- Oumehime
- Ouhime
- Oyukihime
- Ozuhime
- Ozorahime
- Oborohime
- Ohikarihime
Tips for Choosing Japanese Names That Start With O
Start with the meaning. A good name should say something you love. Next, say it out loud to check the sound.
Keep the spelling simple so people can read it easily. Check the kanji too, because the same sound can have many meanings. Last, pick a name that fits the person, the pet, or the character.
A quick note: Japanese names depend on kanji, so meanings and spellings can change. Check the kanji for any name before you publish its meaning.
FINAL WORDS
Japanese names that start with O are simple, soft, and full of meaning. Many of them link to nature, peace, and inner strength. That is what makes them so special. They sound gentle, but they carry real depth.
You now have a wide range of choices. Some names are strong and bold, which suit boys well. Others are sweet and graceful, which suit girls. Unisex names give you even more freedom. There is something here for every taste.
When you pick a name, look at the meaning first. Then say it out loud a few times. A good name should feel smooth and natural. It should also fit the person or character who will carry it.
Take your time and trust your gut. The right name will stand out when you see it. We hope this list helped you find an O name you love. Thanks for reading, and good luck with your choice!
FAQs
What is a Japanese word that starts with the letter “o”?
A common one is “ohayo,” which means “good morning.” Other easy ones are “omedeto” (congratulations) and “onegai” (please).
Is there a name that starts with o?
Yes, there are many. Osamu, Oharu, Orie, and Otoha are real Japanese names that start with O. You can see a full list of boy, girl, and unisex options in this post.
What is the Japanese letter for “o”?
In hiragana, “o” is ć. In katakana, it is ćŖ. Both are read as the same “o” sound.
What are the rarest Japanese names?
Rare names are often old, noble, or written with uncommon kanji. Names like Otsuhime and Okimaro feel historic and are not used much today. Some surnames from small villages are also very rare.
What is the o for in Japanese?
The “o” at the start of a word is often a polite prefix. It makes words sound respectful, like “ocha” (tea) and “okane” (money). The sound “o” also marks the object in a sentence when it is written ć.
How do you say what the f * ck in Japanese?
A common way is “Nanda yo kore?” which is rough and means “What the heck is this?” A stronger, rude version is “Nani kore?” said with an angry tone. Use these only with close friends, because they can sound rude.
What does “o” stand for in Japanese?
By itself, “o” is just a sound, not an abbreviation. It can be a polite prefix (ć), or the object marker (ć). With a long sound, “Å” can also mean “big” (大) or “king” (ē).
How to type Japanese o?
Turn on the Japanese keyboard, then type “o” to get ć. Press F7 to change it to katakana ćŖ. For the long “Å” sound, type “ou,” and for the particle ć, type “wo.”
Hi, Iām CH ZAHID! I research the origins, trends, and meanings behind names from across the globe. Whether you need a classic family name, a rare fantasy title, or a fun nickname, my goal is to make your search simple, inspiring, and fun.