| Titre | Type | Artiste |
|---|
| - O | Album | B-DASH |
| - O | Album | Shimamiya Eiko |
| - O | Album | ZONE |
| - Oｎe Shape | Album | DJ MU-R |
| - O'kay | Single | Emi Hinouchi |
| - O-CRAZY LUV | Album | Yamada Keiko |
| - O...Oh | Album | PixelToy |
| - O.K. Funky God | Single | Ami Suzuki |
| - O2 | Single | ORANGE RANGE |
| - OAO | Single | MOO GA DANG |
| - oasis | Single | Bahashishi |
| - Oasis | Single | Do As Infinity |
| - OASIS | Single | GACKT |
| - Oasis & Yiruma | Album | Yiruma |
| - Oath | Single | LICKER |
| - OATH | Album | Se'ikspia |
| - Oath And Nigh War | Album | Over Arm Throw |
| - Objexxx | Single | La:Sadie's |
| - Oblivion Dust | Album | Oblivion Dust |
| - Oblivious | Single | KALAFINA |
| - Oboeteru | Single | HOME MADE KAZOKU |
| - Oboreru Sakana | Single | Sadie |
| - Oboreta Machi | Album | AQUARIUS |
| - Oboro tsuki | Single | Tokyo Michael |
| - Oboro/Sora | Single | metronome |
| - oborobi | Single | SIVA |
| - Oborozuki | Single | Jinkaku Radio |
| - Oborozukiyo Inori | Single | Mika Nakashima |
| - Obscene | Album | gossip |
| - Obsession single | Single | See-Saw |
| - occult proposal | Single | Vidoll |
| - OCEAN | Single | B'z |
| - OCEAN SIDE | Album | Kikuchi Momoko |
| - ocha no machuudoku category | Album | GILL'E CADITH |
| - Ochakamen | Album | Serani Poji |
| - ochanoma killer -shokai gentei ban- | Album | SEX-ANDROID |
| - Octave | Album | Naohito Fujiki |
| - Odin | Single | LOUDNESS |
| - Odor | Album | Cocore |
| - Odore | Single | Micro |
| - Odore! Soran Parapara | Single | Soran Happys To Neko Hiroshi |
| - ODORIE | Album | HIROSHIMA |
| - Odoro yo Honey | Single | Missile Innovation |
| - Odorou yo | Single | Tamaki Hiroshi |
| - Odoru Akachan Ningen (feat. Fumihiko Kitsutaka) | Single | Kenji Ohtsuki |
| - odoru kubi | Album | Bleach |
| - ODYSSEY | Single | Chicago Poodle |
| - ODYSSEY | Single | Yuuka Nanri |
| - OFF THE LOCK | Album | B'z |
| - Off the Rec | Single | Lee Hyori |
| - OFF THE WALL | Album | SKUNK WORKS |
| - OFFICIAL BOOTLEG | Album | lynch. |
| - OFFICIAL BOOTLEG II | Album | lynch. |
| - Official Bootleg Vol.1 | Album | Soul Company |
| - Official Bootleg Vol.2 | Album | Soul Company |
| - Ogon soul | Single | Shonannokaze |
| - Ogre You Asshole | Album | OGRE YOU ASSHOLE |
| - Oh my darlin Girls have Fun | Album | Nakanomori BAND |
| - Oh My Darlin' | Single | Nakanomori BAND |
| - Oh My God!! | Single | HERO (visual kei) |
| - Oh My Goodness! vol.1 | Album | Jang Yoon Jeong |
| - OH MY JULIET! | Single | Fujii Takashi |
| - OH MY JULIET. | Single | LM.C |
| - Oh My Love | Album | ZARD |
| - Oh my sister | Album | SOULHEAD |
| - Oh My Sister(Remix)／I'm just going down | Single | SOULHEAD |
| - Oh My! | Album | Andrew Chou |
| - Oh Oh Oh | Single | Taesabiae |
| - Oh Yes ! | Single | Koyote |
| - Oh! Penelope | Single | Oh! Penelope |
| - Oh! Silence | Album | 3rd Line Butterfly |
| - Oh, dear. dear. I haven't | Album | Deserts Chang |
| - Oh, Love | Album | Lucid Fall |
| - Ohayô Jipangu | Single | Dabo |
| - Ohayo Nippon | Album | Hannya |
| - Ohayou | Album | Ritsuko Okazaki |
| - Ohh! Paradise Taste!! | Single | Aiuchi Rina |
| - Ohoshimasa | Single | Love Can |
| - OJ Issue | Album | Oh Jong Hyuk |
| - OK | Single | MEG |
| - OK, Full Throttle | Single | Cool Joke |
| - Ok, I'm Ready | Album | Oh Jong Hyuk |
| - OKA NO KOTOWARI | Single | Onmyo-za |
| - Oka Ryoran | Single | Kaya |
| - Okaeri | Single | ayaka |
| - Okaerinasai | Album | Miyuki Nakajima |
| - Okara | Single | Kaidan-light |
| - Okaruto jigoku | Single | R-15 |
| - Okashi na kuni no Alice | Single | Kenllre |
| - Okie Dokie | Album | Copy Machine |
| - okite neru -FUNNY DAY & HARD NIGHT- | Album | PE'Z |
| - Okitegami | Single | Miki Fujimoto |
| - OKOKOROIRE | Album | PE'Z |
| - Oksoo Photo Studio | Album | Lyn |
| - Okubyou na Lion | Single | Yoriko |
| - Okurimono | Single | SABOTEN |
| - Okuru Kotoba | Single | FLOW |
| - Okuru kotoba | Album | Sendai Kamotsu |
| - Old & New | Single | Airbag |
| - OLD BOY 6days -3rd Loop- | Single | MY BactEriA Heat iSland (formerly benny-kari) |
| - OLD DAYZ | Single | So'fly |
| - OLD NEW WORLD | Single | the Vambie |
| - Old Rookie | Album | 45rpm |
| - OLDCODEX | Album | OLDCODEX |
| - OLIVIA inspi' REIRA (TRAPNEST) | Album | OLIVIA |
| - Om Wings Of Time | Album | Ivana Wong |
| - omae ni sasageru minikui koe | Single | girugamesh |
| - Omae ni Yume Nadotsu Kame Rumon ka | Single | ∀NTI FEMINISM |
| - Omae no mono wa ore no mono | Album | Nightmare |
| - Omae wa sugee! | Album | 175R |
| - Omae Yanai To Akannen | Single | Sakuraba Yuichiro |
| - OMAJINAI★PERORI | Single | Perfume |
| - Omakase! Guardians | Single | Guardians 4 |
| - Omake de Doki Doki | Single | Eimy |
| - Omega Rhythm | Album | Uplift Spice |
| - Omen Of Seven | Album | Rokugen Alice |
| - Omnibus | Single | Jinkaku Radio |
| - Omocha no Miisha | Single | Noir Fleurir |
| - Omoi | Single | Nana Mizuki |
| - Omoi Afurete | Album | Aya Matsuura |
| - Omoi ga Kasanaru Sono Mae ni... | Single | Ken Hirai |
| - Omoi sugoshi mo koi no uchi | Single | Southern All Stars |
| - Omoi wo Kanadete | Single | SAVAGE GENIUS |
| - Omoide Aruki | Single | Psycho le Cému |
| - Omoide in my Head 1 ~ Best & B-sides | Album | Number Girl |
| - Omoide In My Head 2 - Kiroku Series 1 (1/4) | Album | Number Girl |
| - Omoide In My Head 2 - Kiroku Series 1 (2/4) | Album | Number Girl |
| - OMOIDE IN MY HEAD 4 ~chin NG & RARE TRACKS~ | Album | Number Girl |
| - Omoikane x Ao wi Tori x Hikanronsha | Album | Ichigo69. |
| - Omokage no Miyako | Single | Kiyoshi Hikawa |
| - omokage no reijin | Single | THE.GOLDEN SPIDER |
| - Omou | Single | Kagrra, |
| - ON | Album | Boom boom satellites |
| - on & on | Single | SNoW |
| - On and On | Album | Lena Park |
| - on button down | Album | on button down |
| - On Ken's Time | Album | Ken Zhu |
| - On My Own | Album | Grace Yip |
| - On My Way Back Home | Album | OCEANLANE |
| - On The Love Beach | Album | Nagisa Ni Te |
| - On the Painted Desert - Rampant Colors | Single | Boom boom satellites |
| - On The Record | Album | AKIAKANE |
| - On The Right | Single | MOUMOON |
| - ON THE RUN | Single | HOME MADE KAZOKU |
| - On The Run | Album | Jay Chou |
| - On the Verge of Destruction 1992.1.7 Tokyo Dome Live | Album | X JAPAN |
| - On The Way | Album | Noriaki Sugiyama |
| - on the way ~Yakusoku no Basho e~ | Single | SweetS |
| - on, then, in | Album | MIRROR |
| - Onaji Sora Mitsumeteru Anata Ni | Single | AZU |
| - Onaji Sora wo Miageteru | Single | Kai Natsu |
| - ONCE | Album | Lee Soo Young |
| - Once A Fool,... | Album | Yukihiro Takahashi |
| - Once Again | Album | 1sagain |
| - Once Again | Album | Melody Chiang |
| - Once in a blue moon | Album | Mast [Aliene Ma'riage] |
| - ONCE IN A SUMMER | Album | Park Yong Ha |
| - Once N 4 All | Album | 1TYM |
| - Once Upon A Time | Album | Kahimi Karie |
| - Once Upon a Time | Album | S.H.E |
| - Once Upon a Time in the pillows | Compilation | the pillows |
| - Oncoming | Album | Kwan Kenny |
| - ONE | Single | AI |
| - ONE | Single | Ami Suzuki |
| - ONE | Album | Angela Aki |
| - ONE | Album | Arashi |
| - ONE | Single | Ayuse Kozue |
| - ONE | Album | Bonnie Pink |
| - One | Album | Faith Yang Nai Wen |
| - One | Album | Jamosa |
| - One | Album | Michita |
| - ONE | Album | Naifu |
| - one | Album | waffles |
| - One & Only | Album | Crown J |
| - One & Only | Album | Poppin' Hyun Joon |
| - ONE (Pokemon Version) | Single | Crystal Kay |
| - ONE (Regular Edition) | Single | Crystal Kay |
| - ONE AGING BY NOOK | Album | nookicky |
| - One By One | Album | Golf & Mike |
| - One Date | Single | F.T Island |
| - One Day | Album | 101A |
| - ONE DAY | Album | Alan Ke You Lun |
| - One day | Single | M to M |
| - One Day | Single | Min Kyung Hoon |
| - ONE DAY | Single | THE LOOSE DOGS |
| - One Day (Digital Single) | Single | SATOMI' |
| - One day, Light | Album | Monni |
| - ONE DROP | Album | AQUARIUS |
| - ONE DROP [Regular Edition First Press] | Single | KAT-TUN |
| - ONE DROP [Regular Edition] | Single | KAT-TUN |
| - One Emotion | Album | Smash up |
| - One Fine Day | Album | Kim Jong Wook |
| - One Fine Day | Single | Lee Woo Sang |
| - One For All | Album | ONE☆DRAFT |
| - One For All - All For One | Album | Galneryus |
| - One Fun | Single | Bathtub Shitter |
| - one gleam after the shadow | Album | texas pandaa |
| - ONE HEART | Album | Metis |
| - One Hundred Thousand Whys | Album | Faye Wong |
| - One Inch Closer | Album | Nicholas Tse |
| - One Is Not A Lonely Word | Album | Drunken Tiger |
| - ONE LIFE | Album | Mai Kuraki |
| - One Life | Single | the pillows |
| - ONE LIFE, ONE DEATH | Album | BUCK-TICK |
| - One Life, One Death Cut Up | Album | BUCK-TICK |
| - One love | Album | GLAY |
| - ONE LOVE | Album | Metis |
| - One Love | Single | Sprout |
| - One Love | Album | Tata Young |
| - One love (Limited Edition) | Single | Arashi |
| - ONE LOVE/A LONG JOURNEY | Single | HΛL |
| - One Mate | Album | Blue Bird Flying Fish |
| - ONE MIC | Album | Dohzi-T |
| - One More Dream | Single | SPEED |
| - One more dream + Remix | Album | SPEED |
| - One More Roses | Compilation | DJ Mitsu The Beats |
| - One More Time, OK | Album | Tenjochiki |
| - ONE MORE WITH FEELING | Album | uinona |
| - One New | Album | Jang Pil Sun |
| - One Night | Single | DJ OZMA |
| - One Night Carnival | Single | Kishidan |
| - One Night Heaven | Album | KIX-S |
| - One Night Love Again | Album | Hye Ryoung |
| - One Night Magic | Album | Sabbrabells |
| - One night robot kicks the rock | Album | Tornado Tatsumaki |
| - One Night Star | Single | The Arrows |
| - one night trip EP | Single | Abe Fuyumi |
| - One ok Rock | Album | ONE OK ROCK |
| - One piece | Album | S-WORD |
| - One Room Disco | Single | Perfume |
| - One Side National Hour | Album | [denno:oblaat] |
| - One Star | Single | Yosuke Ito |
| - One Step More And You Die | Album | MONO |
| - ONE SURVIVE | Single | Mika Nakashima |
| - One Sweet Day | Album | Rumble Fish |
| - One Time | Single | SoulJa |
| - One To One | Album | Fan Wei Qi |
| - one too many Chocolat | Album | Chocolat |
| - One Way | Album | 1TYM |
| - One Way | Album | Qin Hai Lu |
| - ONE WAY | Single | Thelma Aoyama |
| - ONE WISH | Album | Fortuna |
| - One X oOne | Album | Chemistry |
| - One-Der Land | Album | Ryo The Skywalker |
| - one-room survival | Album | Serani Poji |
| - One/Only | Album | UMC/UW |
| - oneday | Single | euphoria |
| - Onegai ! senorita | Single | ORANGE RANGE |
| - ONENESS | Album | D-51 |
| - Onepiece Recording | Album | Corniche Camomile |
| - Oneself - Likeness | Album | Quasimode |
| - Oneway Cruisin' | Album | Chokesleeper |
| - Ongaku | Single | FoZZtone |
| - Ongaku no Kodomo wa Mina Utau | Album | Sambomaster |
| - Ongaku no Susume | Album | Halcali |
| - Ongaku to egao | Album | Yellow Cherry |
| - Ongakuzukan | Album | Ryuichi Sakamoto |
| - Ongaq:stromatolite | Album | TaQ |
| - Ongen | Single | Brodiaea |
| - Ongen Mei | Single | Kress Devia |
| - Oni to Shoujo no Kichiku BLEND | Single | R-15 |
| - ONJQ Live In Lisbon | Album | Otomo Yoshihide |
| - Onkai Kuronikuru | Album | DOREMIdan |
| - Only | Single | Vanness Wu |
| - Only Human | Single | K |
| - Only lonely glory | Single | BUMP OF CHICKEN |
| - Only Look At Me Part.2 | Single | G-DRAGON |
| - Only love | Album | SM Town |
| - Only Love Strangers | Album | Faye Wong |
| - Only my railgun | Single | fripSide |
| - Only Nicholas | Album | Nicholas Teo |
| - Only One | Album | Shinhwa |
| - Only One Way | Album | H-Eugene |
| - Only You | Single | Fahrenheit |
| - Only You (Special Winter) | Single | 2PM |
| - ONMYO-LIVE | Album | Onmyo-za |
| - Onna ni Sachi Are | Single | Morning Musume. |
| - Onna no Ko Otoko no Ko | Single | Yuko Ogura |
| - Onna, Kanashii, Otona / Inshouha Renoir no You ni / Hitoshirezu Mune wo Kanaderu Yoru no Aki | Single | Sexy Otonajan |
| - Onyanko Club Solo & Unit Mini Best | Album | Onyanko Club |
| - Oogoe Diamond | Single | AKB48 |
| - Ooh lala | Album | cat tien |
| - Ooh Yeah | Single | Machine |
| - OOkeah | Album | Supercar |
| - Ooki na ai de motenashite | Single | C-ute |
| - Ookina Furudokei | Single | Ken Hirai |
| - oolt cloud | Album | advantage Lucy |
| - Oooh! Ie~! (Mini album) | Single | HOME MADE KAZOKU |
| - OOPARTS | Album | JABBERLOOP |
| - OOPARTS | Album | the pillows |
| - Oopu.Ngu | Single | An Cafe |
| - Oorora ni narenakatta hito no tameni | Album | Spitz |
| - Oosaka Rockets (Cher de Memoire) | Album | MALICE MIZER |
| - Ootori (Hou) | Album | MAXIMUM THE HORMONE |
| - OOYeah!! | Album | Supercar |
| - Op.4 | Album | Lena Park |
| - Open fire ! | Album | SMASH |
| - Open House At Montmartre | Single | Lapin |
| - Open The Door | Album | B-Dong 301-HoB |
| - Open The Safe | Album | Rumble Fish |
| - Open Your Cunt | Album | Masonna |
| - Open Your Heart ~Sugao no Mama de~ | Album | JUJU |
| - Opening | Single | UnLimited |
| - Open_d | Album | doa |
| - OPERA? | Album | Hajime Mizoguchi |
| - Operation Overload7 | Album | m.o.v.e |
| - OPERA~za no Kaijin | Single | Velvet Eden |
| - Ophelia | Single | Kaya |
| - Oppa's Heart | Album | EZ-Life |
| - Optical Axis | Compilation | DJ RYOW |
| - Opus | Album | Rurutia |
| - Opus 69 | Album | David Tao |
| - Opus Pia | Album | Takagi Masakatsu |
| - Opuscula | Album | 800 cherries |
| - or | Album | Spangle call Lilli line |
| - ora ichinuketa | Album | gagaga SP |
| - Orang Bilang | Album | Wali |
| - Orange | Single | Bonnie Pink |
| - Orange | Single | Homura |
| - Orange | Single | Lil'B |
| - Orange | Album | ORANGE RANGE |
| - Orange | Single | Rie Kugimiya |
| - Orange | Single | SAVAGE GENIUS |
| - Orange | Single | V6 |
| - Orange Ball | Album | ORANGE RANGE |
| - Orange Canvas / Fairy's Stick | Single | SATOMI' |
| - Orange Days | Single | SQUAREHOOD |
| - Orange Drama [Limited] | Single | heidi. |
| - Orange Drama [Regular] | Single | heidi. |
| - Orange Funky Radio | Album | Yum!Yum!ORANGE |
| - ORANGE GRADATION | Single | Imitation PoPs uchuu sentai NOIZ |
| - Orange Iro No Kokoro | Single | Mi |
| - Orange Juice | Album | Yum!Yum!ORANGE |
| - Orange Moon | Album | Khalil Fong |
| - Orange no suna | Single | Fonogenico |
| - Orange Range | Album | ORANGE RANGE |
| - Orange Range - 1st Contact | Album | ORANGE RANGE |
| - Orange Road | Single | Cherry Filter |
| - ORANGE ROCK FES 33 | Album | Yum!Yum!ORANGE |
| - Orange Street 33 | Album | Yum!Yum!ORANGE |
| - Orange Sunshine | Album | JUDY AND MARY |
| - ORANGE★NIGHT | Single | Aiuchi Rina |
| - orangery | Album | waffles |
| - Oratorio | Single | Secilia Luna |
| - Orb | Album | Maschera |
| - Orb | Album | Sakura Saori |
| - orbital period | Album | BUMP OF CHICKEN |
| - Orchestra | Album | Zia |
| - Orchestral Game Concert 2 | Album | Yoko Kanno |
| - Orchestral Game Concert 3 | Album | Yoko Kanno |
| - Order Made | Single | Radwimps |
| - ore | Album | ORESKABAND |
| - Ore no mono wa ore no mono | Album | Nightmare |
| - Ore wa isogashii | Single | Vogus Image |
| - Ore wa Kusatta TOMATO ja nee~ | Album | Hanamuke |
| - Ore wa Tokoton Tomaranai!! | Single | Kageyama Hironobu |
| - ORESKABAND (U.S. Version avec Bonus Tracks) | Album | ORESKABAND |
| - Oretachi Ga Hungry Days!! | Album | Hungry Days |
| - Oretachi ikemen (ni mai me) | Album | DUSTAR-3 |
| - Oretachi ni Asu wa Aru | Single | SMAP |
| - Oretachi Niwa Doyobi Shikanai | Single | Kishidan |
| - Oretachi no Yamato | Single | Hannya |
| - Organic | Album | C.O.U. (CHN organic union) |
| - Organic Plastic Music | Album | Orange Pekoe |
| - Organum | Single | Silver Ash |
| - Orgasm [EP] | Single | X JAPAN |
| - Orgel Koi no Tsubomi | Album | Koda Kumi |
| - Orgs | Album | Abort Mastication |
| - Ori No Naka De Miru Yume | Single | D'espairsRay |
| - Orichalcum Biyori | Album | bonobos |
| - Oriental diamond/Kuchibiru Motion | Single | Puffy Ami Yumi |
| - Origa | Album | Origa |
| - Origin of Dazzle | Album | Dazzle Vision |
| - Origin of hide yokosuka Saver Tiger vol.1 Visual Loud & Cult Live!! | Album | hide |
| - Original A.I. | Album | AI |
| - Original Best 50 | Album | Misora Hibari |
| - Original Love Song | Album | Zheng Yuan |
| - Original Smile | Single | SMAP |
| - Original Story CD | Compilation | GACKT |
| - ORIGINAL TRACKS Vol.1 | Album | Namie Amuro |
| - ORIGINAL! | Single | Yuria |
| - Origins of hide - Yokosuka Saver Tiger Vol 2. Best live & Making | Album | hide |
| - ORION | Single | Mika Nakashima |
| - Orion | Album | she |
| - Orion once again | Single | DELUHI |
| - Orion once again (2nd press) | Single | DELUHI |
| - Orion to Hanabi to Tabidatsu Doshiguwa Tachi e | Single | Serial⇔NUMBER |
| - Oritamishiki ojiichan | Single | KuRt |
| - Osaka Koi no Uta | Single | Morning Musume. |
| - Osaka no Onna | Single | Hitomi Shimatani |
| - Osaka Obachan Rock / Osaka Romanesque | Single | Kanjani8 |
| - Osaka Rainy Blues | Single | Kanjani8 |
| - Osanaki Futago no Himitsu | Single | Oyuugi Wagamama Dan X【PaRADEiS】 |
| - Osanaki Hibi no Monogatari | Single | clorcian |
| - OSC-DIS (OSCILLATOR IN DISTORTION) | Album | THE MAD CAPSULE MARKETS |
| - OSCA | Single | Tokyo Jihen |
| - Oshare Bancho feat. Soy Sauce | Single | ORANGE RANGE |
| - Osharu no gakko ichigokan | Album | Charlotte |
| - Osharu no Gakkou Futatsu Goukan | Album | Charlotte |
| - Osiris Hotei to Skarabe no Monsho - Episode of Osiris | Single | ANUBIS |
| - Oskaka mon Amour | Album | S.O.B. |
| - Osmosys | Album | Kun Chen |
| - Otaku Girls no Utage | Album | Lecca |
| - Otaku Overclocks 21 | Album | DJ Sharpnel |
| - Otegami | Single | SID |
| - OTHER GOOSE | Album | Guniw Tools |
| - Other Songs | Single | Joyside |
| - Oto no Compass | Album | Haruka Shimotsuki |
| - Oto No Ishi | Album | REDALiCE |
| - Oto No Ishi 2 | Album | REDALiCE |
| - Oto no nai mori | Single | Porno Graffitti |
| - Oto no Nai Sekai / Toki no Bell | Single | My Little Lover |
| - otokaze Fanfare | Album | Multi Colored Vox |
| - Otoko Dake Dato, ... Kounarimashita! | Single | AAA |
| - otoko icchokusen | Single | Bleach |
| - Otoko uta ~cover song collection~ | Album | Hitomi Shimatani |
| - Otokogi | Album | Kiyoshi Hikawa |
| - Otokogumi Hit Collection | Album | Otokogumi |
| - Otome no Inori | Single | Mano Erina |
| - Otome Pasta ni Kandou | Single | Tanpopo |
| - Otome wa Boku ni Koishiteru Theme: Again | Single | Sakakibara Yui |
| - Otome wa DO MY BEST Desho? | Single | Mika Kikuchi |
| - Otomo Yoshihide Plays The Music Of Takeo Yamashita | Album | Otomo Yoshihide |
| - Otomo Yoshihide's New Jazz Orchestra | Album | Otomo Yoshihide |
| - Otona no Kijun | Album | Charlotte |
| - Otsu Ban | Single | NEU |
| - Ou Yu | Album | Zhou Xun |
| - Ouchi Ga Ichiban | Single | Satomi Koorogi |
| - Oudourakudo | Album | Microphone pager |
| - OUI ! OUI ! OUI ! | Album | The Mirraz |
| - Oujisama to Yuki no Yoru | Single | Tanpopo |
| - Ouka ranman | Single | Kagrra, |
| - Ouka Saki Some ni Keri | Single | D |
| - Ouka Shunpuu | Single | Excia |
| - OuMuPo Vol.6 | Album | DJ Krush |
| - Our Day | Album | Fan Wei Qi |
| - Our days | Single | Ami Suzuki |
| - Our dreams walking their way - Chapter 1 (split Iscariote/envy) | Single | envy |
| - Our Dying Day | Single | Leviathan |
| - Our favorite pop | Album | Paris Match |
| - our first noodles | Album | noodles |
| - Our Hour Not Dead | Album | OUR HOUR |
| - Our Little Miracles | Album | Hatsune Miku |
| - Our Love Songs Vol.6 | Compilation | Jay Chou |
| - our music lab | Album | mash |
| - Our Nation | Album | Crying Nut |
| - Our time | Single | Dream |
| - Ourself Beside Me | Album | Ourself Beside Me |
| - Out Blues | Single | Thee Michelle Gun Elephant |
| - Out feat. Lee Jae Won -digital single- | Single | Lee Jae Won |
| - OUT LOUD | Album | Boom boom satellites |
| - Out of Body Experience | Album | Water Melon |
| - Out of Control | Album | Bae Chi Gi |
| - OUT of CONTROL | Album | Silver Ash |
| - Out of noise | Album | Ryuichi Sakamoto |
| - Out of Reason | Single | OCEANLANE |
| - Out of Season | Album | Anoice |
| - Out of the Light of the 13 Dark Night | Album | BALZAC |
| - OUT OF VOID | Single | ReivieЯ |
| - Out To Lunch | Album | Otomo Yoshihide |
| - OUT TO LUNCHTIME | Single | Fuzylog. |
| - Out Works & Collaboration Best | Album | Koda Kumi |
| - Outcast (B - side + Rarities) | Album | GRAPEVINE |
| - Outerlimits | Album | Show-Ya |
| - Outernet | Album | globe |
| - OUTGROW | Album | BoA |
| - OUTLAW | Album | Nightmare |
| - Outlet Blues | Album | Norikiyo |
| - outo | Single | cali gari |
| - Outtakes Berlin vol1 | Album | Samon Kawamura |
| - Outtakes Tokio vol.1 | Album | Samon Kawamura |
| - OVA "Kodomo no Jikan - Ni Gakki" Outro Theme | Single | Little Non |
| - Over | Single | Eddie |
| - OVER | Single | HIGH and MIGHTY COLOR |
| - OVER | Single | Scar. |
| - OVER -Indie version- | Single | HIGH and MIGHTY COLOR |
| - OVER ALIVE | Single | The Zolge |
| - Over and Over | Single | Every Little Thing |
| - Over and Over/ELT Songs from L.A. | Single | Every Little Thing |
| - Over Drive | Single | JUDY AND MARY |
| - over drive | Single | m.o.v.e |
| - Over Drive | Album | Suns Owl |
| - Over Load | Single | Mika Nakashima |
| - Over Shine | Single | Aiuchi Rina |
| - Over The Futur | Single | Karen Girl's |
| - Over the Rainbow | Album | Angela Zhang |
| - Over The Rainbow | Album | at17 |
| - Over the Rainbow | Album | Boohwal |
| - Over The Rainbow | Single | Kim Ah Joong |
| - Over The Rainbow Vol.2 | Album | at17 |
| - Over The Rainbow Vol.3 | Single | at17 |
| - Over The Rainbow Vol.4 | Album | at17 |
| - Over the surges | Album | Love Solfege |
| - Over the time Time is over | Album | CORE OF SOUL |
| - Over... | Single | 12012 |
| - over... | Single | K |
| - Overcome | Single | 10-FEET |
| - Overdoing | Single | SHAKALABBITS |
| - Overdoing | Album | Tokyo Yankees |
| - Overdose EP | Album | Overdose |
| - Overindulge | Single | DI3SIRAE |
| - Overjoyed | Album | Sammi Cheng |
| - Overload | Album | Anthem |
| - OVERSEA | Album | Honda Minako |
| - Overstep | Album | BellaMafia |
| - Owari no hajimari | Single | XodiacK |
| - Owari no Shishuu ~Tsui no Yakata~ | Album | Yôsei Teikoku |
| - Owari wa konai | Album | 1000 Travels of Jawaharlal |
| - Owarinai Yume | Single | Nanase Aikawa |
| - Oxidize Phenomina | Album | ΛCiδ |
| - OxyGenie of Happiness | Album | Genie Zhuo |
| - Oyabukou doori ha kyou mo ame | Single | R-15 |
| - oyasumi nasai | Single | cali gari |
| - oz | Album | 100s |
| - Ozone | Album | Shimamiya Eiko |
| - Ozzy | Album | BEAT CRUSADERS |
