| Titre | Type | Artiste |
|---|
| - O | Album | B-DASH |
| - O | Album | Shimamiya Eiko |
| - O | Album | ZONE |
| - O'kay | Single | Emi Hinouchi |
| - O-CRAZY LUV | Album | Yamada Keiko |
| - 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/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 |
| - ocha no machuudoku category | Album | GILL'E CADITH |
| - ochanoma killer -shokai gentei ban- | Album | SEX-ANDROID |
| - Odore | Single | Micro |
| - Odoro yo Honey | Single | Missile Innovation |
| - Odoru Akachan Ningen (feat. Fumihiko Kitsutaka) | Single | Kenji Ohtsuki |
| - odoru kubi | Album | Bleach |
| - OFF THE LOCK | Album | B'z |
| - Off the Rec | Single | Lee Hyori |
| - OFFICIAL BOOTLEG | Album | lynch. |
| - Ogon soul | Single | Shonannokaze |
| - Oh my darlin Girls have Fun | Album | Nakanomori BAND |
| - 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 |
| - Ohayo Nippon | Album | Hannya |
| - Ohoshimasa | Single | Love Can |
| - OK | Single | MEG |
| - OK, Full Throttle | Single | Cool Joke |
| - Ok, I'm Ready | Album | Oh Jong Hyuk |
| - Oka Ryoran | Single | Kaya |
| - Okaeri | Single | ayaka |
| - Okara | Single | Kaidan-light |
| - Okaruto jigoku | Single | R-15 |
| - Okashi na kuni no Alice | Single | Kenllre |
| - okite neru -FUNNY DAY & HARD NIGHT- | Album | PE'Z |
| - Okitegami | Single | Miki Fujimoto |
| - OKOKOROIRE | Album | PE'Z |
| - Okuru Kotoba | Single | Flow |
| - Okuru kotoba | Album | Sendai Kamotsu |
| - OLD BOY 6days -3rd Loop- | Single | MY BactEriA Heat iSland (formerly benny-kari) |
| - OLIVIA inspi' REIRA (TRAPNEST) | Album | OLIVIA |
| - omae ni sasageru minikui koe | Single | Girugämesh |
| - 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 |
| - Omnibus | Single | Jinkaku Radio |
| - Omoi ga Kasanaru Sono Mae ni... | Single | Ken Hirai |
| - Omoi wo Kanadete | Single | SAVAGE GENIUS |
| - Omoide Aruki | Single | Psycho le Cému |
| - 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. |
| - 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 The Love Beach | Album | Nagisa Ni Te |
| - On the Painted Desert - Rampant Colors | Single | Boom boom satellites |
| - On The Record | Album | AKIAKANE |
| - 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 |
| - Once N 4 All | Single | 1TYM |
| - Once Upon a Time | Album | S.H.E |
| - ONE | Single | AI |
| - ONE | Single | Ami SUZUKI |
| - ONE | Album | Angela AKI |
| - ONE | Album | Arashi |
| - ONE | Single | Ayuse Kozue |
| - One | Album | Jamosa |
| - One & Only | Album | Crown J |
| - ONE (Regular Edition) | Single | Crystal Kay |
| - ONE AGING BY NOOK | Album | nookicky |
| - One By One | Album | Golf & Mike |
| - One Day | Album | 101A |
| - ONE DAY | Single | THE LOOSE DOGS |
| - One Day (Digital Single) | Single | SATOMI' |
| - ONE DROP | Album | AQUARIUS |
| - One For All - All For One | Album | Galneryus |
| - One Fun | Single | Bathtub Shitter |
| - one gleam after the shadow | Album | texas pandaa |
| - One Hundred Thousand Whys | Album | Faye Wong |
| - One Inch Closer | Album | Nicholas Tse |
| - 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 (Limited Edition) | Single | Arashi |
| - ONE LOVE/A LONG JOURNEY | Single | HΛL |
| - One mic | Album | DOJI-T |
| - One More Time, OK | Album | Tenjochiki |
| - ONE MORE WITH FEELING | Album | uinona |
| - One Night | Single | DJ OZMA |
| - One Night Star | Single | The Arrows |
| - One ok Rock | Album | ONE OK ROCK |
| - One piece | Album | S-WORD |
| - One Step More And You Die | Album | Mono |
| - ONE SURVIVE | Single | Mika Nakashima |
| - One Way | Album | 1TYM |
| - One Way | Single | Thelma Aoyama |
| - ONE WISH | Album | Fortuna |
| - One-Der Land | Album | Ryo The Skywalker |
| - 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 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 |
| - Oni to Shoujo no Kichiku BLEND | Single | R-15 |
| - ONJQ Live In Lisbon | Album | Otomo Yoshihide |
| - Onkai Kuronikuru | Album | DOREMIdan |
| - Only Human | Single | K |
| - Only Look At Me Part.2 | Single | G-DRAGON |
| - Only love | Album | SM Town |
| - Only Love Strangers | Album | Faye Wong |
| - Only Nicholas | Album | Nicholas Teo |
| - Only One | Album | Shinhwa |
| - Only One Way | Album | H-Eugene |
| - Onna ni Sachi Are | Single | Morning Musume. |
| - Onna no Ko Otoko no Ko | Single | Yuko Ogura |
| - OOkeah | Album | Supercar |
| - Ookina Furudokei | Single | Ken Hirai |
| - Oooh! Ie~! (Mini album) | Single | HOME MADE KAZOKU |
| - 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 The Safe | Album | Rumble Fish |
| - Open Your Cunt | Album | Masonna |
| - Open Your Heart ~Sugao no Mama de~ | Album | JUJU |
| - Operation Overload7 | Album | m.o.v.e |
| - OPERA~za no Kaijin | Single | Velvet Eden |
| - Oppa's Heart | Album | EZ-Life |
| - Opus | Album | Rurutia |
| - or | Album | Spangle call Lilli line |
| - ora ichinuketa | Album | gagaga SP |
| - Orange | Single | Homura |
| - Orange | Single | Lil'B |
| - Orange | Album | ORANGE RANGE |
| - Orange | Single | V6 |
| - Orange Ball | Album | ORANGE RANGE |
| - Orange Canvas / Fairy's Stick | Single | SATOMI' |
| - Orange Funky Radio | Album | Yum!Yum!ORANGE |
| - ORANGE GRADATION | Single | Imitation PoPs uchuu sentai NOIZ |
| - Orange Juice | Album | Yum!Yum!ORANGE |
| - Orange night | Single | AIUCHI Rina |
| - Orange Range | Album | ORANGE RANGE |
| - Orange Range - 1st Contact | Album | ORANGE RANGE |
| - Orange Street 33 | Album | Yum!Yum!ORANGE |
| - Oratorio | Single | Secilia Luna |
| - orbital period | Album | BUMP OF CHICKEN |
| - 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 |
| - Oretachi Niwa Doyobi Shikanai | Single | Kishidan |
| - Organic Plastic Music | Album | Orange Pekoe |
| - Organum | Single | Silver Ash |
| - Orgasm [EP] | Single | X JAPAN |
| - Orgel Koi no Tsubomi | Album | Koda Kumi |
| - Ori No Naka De Miru Yume | Single | D'espairsRay |
| - 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 TRACKS Vol.1 | Album | Namie Amuro |
| - Origins of hide - Yokosuka Saver Tiger Vol 2. | Album | hide |
| - Orion once again | 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 |
| - OSC-DIS (OSCILLATOR IN DISTORTION) | Album | THE MAD CAPSULE MARKETS |
| - OSCA | Single | Tokyo Jihen |
| - Osharu no gakko ichigokan | Album | Charlotte |
| - Osharu no Gakkou Futatsu Goukan | Album | Charlotte |
| - Osiris Hotei to Skarabe no Monsho - Episode of Osiris | Single | ANUBIS |
| - Otaku Girls no Utage | Album | lecca |
| - Otegami | Single | SID |
| - OTHER GOOSE | Album | Guniw Tools |
| - Oto no Compass | Album | Haruka Shimotsuki |
| - Oto No Ishi | Album | REDALiCE |
| - Oto No Ishi 2 | Album | REDALiCE |
| - otokaze Fanfare | Album | Multi Colored Vox |
| - Otoko Dake Dato, ... Kounarimashita! | Single | AAA |
| - otoko icchokusen | Single | Bleach |
| - Otoko uta ~cover song collection~ | Album | Hitomi Shimatani |
| - 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 |
| - Ouka ranman | Single | Kagrra, |
| - Ouka Shunpuu | Single | Javelin |
| - OuMuPo Vol.6 | Album | DJ Krush |
| - Our favorite pop | Album | Paris Match |
| - Our Hour Not Dead | Album | OUR HOUR |
| - our music lab | Album | mash |
| - OUR PSYCHOMMUNITY | Album | hide |
| - 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 | Silver Ash |
| - 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 |
| - Outernet | Album | globe |
| - OUTGROW | Album | BoA |
| - OUTLAW | Album | Nightmare |
| - OVER | Single | HIGH and MIGHTY COLOR |
| - OVER | Single | Scar. |
| - Over -Indies Version- | Single | HIGH and MIGHTY COLOR |
| - Over Drive | Single | Judy and Mary |
| - over drive | Single | m.o.v.e |
| - Over the Rainbow | Album | Angela Zhang |
| - Over the time Time is over | Album | CORE OF SOUL |
| - Over... | Single | 12012 |
| - over... | Single | K |
| - Overdoing | Single | SHAKALABBITS |
| - Overdoing | Album | Tokyo Yankees |
| - Oxidize Phenomina | Album | ΛCiδ |
| - OxyGenie of Happiness | Album | Genie Zhuo |
| - oz | Album | 100s |
