- Koji
- Komemiya Riisi (米宮Riisi)
- Kometaf
- Konakun.
- Kontena
- Kooky Sphere
- Koronba
- Kotozuki (言付き)
- Kou (絞)
- Kou (絞)/guide
- Kou (絞)/tour
- Koutsuki (幸付き)/nanahusi
- Kozuki (こづき)
- Kresna
- Kross
- Kross/guide
- Kross/tour
- Kubotsuki
- Kudaranu Mousou No (くだらぬ妄想の)
- Kudaranu Mousou No (くだらぬ妄想の)/guide
- Kudaranu Mousou No (くだらぬ妄想の)/tour
- Kuratsuki (くらつき)
- Kurayami (くらやみ)
- Kuroku
- Kurotsuki
- Kuroyuri (黒百合)
- Kusanagi (草薙)
- Kyoku Yume
- Kyoku Yume/guide
- Kyoku Yume/tour
- Kyomu (虚夢)
- Kyomu (虚夢)/guide
- Kyomu (虚夢)/tour
- Kyukkyu-kun Game (キュッキュくんゲーム)
- Kyukkyu-kun Game (キュッキュくんゲーム)/tour
- Kyukotsuki
- Kōtsuki (凍付き)
- L8R
- L8R/guide
- L8R/tour
- LAPIS lAZULi
- LAPIS lAZULi/guide
- LAPIS lAZULi/tour
- LSDolphin
- Laeaurra Flamehawk
- Land of Obscure Potatoes
- Lani
- Laskeva
- Latanie
- Layered
- LaytonLoztew
- Lca
- Lcd Dem
- Lcd Dem/guide
- Lcd Dem/soundtrack
- Lcd Dem/theories
- Lcd Dem/tour
- Lee Jin Hui (이진희)
- Lefia
- Leon
- Let's Get Happy Ending Project Chapter 1 Yume Nikki Time to Wake Up
- Leviathan
- Leviathan/guide
- Leviathan/tour
- LeviiOnGit
- Lex
- Lie
- Lilit
- Limbo (character)
- Limbo (game)
- Limbo (game)/guide
- Limbo (game)/tour
- Lira
- Lira (Character)
- Lizzie
- Log.(in)
- Log.(in)/guide
- Log.(in)/tour
- Lol
- Lonely
- Lonely/guide
- Lonely/reference
- Lonely/tour
- Lost Time
- Lost Time/guide
- Lost Time/tour
- Lost † Game
- Lost † Game/guide
- Lost † Game/theories
- Lost † Game/tour
- Lovely Sweet Dream
- Lovely Sweet Dream/guide
- Lovely Sweet Dream/tour
- Ls
- Ls/guide
- Ls/tour
- Lu:Cid
- Lu:Cid/guide
- Lu:Cid/tour
- Luar
- Luar/guide
- Lucy
- Luke (ルーク)
- Lull Away
- Lull Away/changelog
- Lull Away/guide
- Lull Away/tour
- Lulu
- Lumi
- Luminary
- LunarRabbit
- M-256\Isasapiens
- MANONNIKKI
- MANONNIKKI/tour
- MC
- MILK
- MILK/guide
- MILK/tour
- Machikado no Michi (街角の道)
- Made In Nightmare (メイド・イン・ナイトメア)
- Made In Nightmare (メイド・イン・ナイトメア)/guide
- Made In Nightmare (メイド・イン・ナイトメア)/tour
- Mado (まど)
- Mado Paf!
- Mado Paf!/tour
- Madoro-Mu (まどろ夢)
- Madoro-Mu (まどろ夢)/guide
- Madoro-Mu (まどろ夢)/theories
- Madoro-Mu (まどろ夢)/tour
- Madotsuki's Closet
- Madotsuki's Closet/tour
- Madotsuki's Story
- Madotsuki's Story/guide
- Madotsuki's Story/tour
- Madotsuki's Story: Retrograde
- Madotsuki's Story: Retrograde/tour
- Madotsuki-neko
- Madotsupeeg
- Mae
- Mafurako: Jiyou Jikan
- Mafurako: Jiyou Jikan/tour
- Magenta
- Magenta/tour
- Magpie Dreams
- Magpie Dreams/guide
- Magpie Dreams/tour
- Maho
- Mai
- Maigo (迷子)
- Maimu (舞夢)
- Maimu (舞夢)/guide
- Maimu (舞夢)/tour
- MajouG (灯子)
- Maka
- Makitsuki (まきつき)
- MalwareSwifto
- Manda
- Manda no Yume
- Manda no Yume/changelog
- Manda no Yume/guide
- Manda no Yume/guide/Coupons
- Manda no Yume/reference
- Manda no Yume/tour
- Mangaka Dream
- Mangaka Dream/tour
- Mangetsu no Yume
- Mangetsu no Yume/tour
- Mareritt
- Maria
- Maria (Motherland)
- Mariana
- Marisyan (まりしゃん)
- Maritsuki (まりつき)
- Mark
- Markus
- MasterZere
- Mata, Itsuka. (また、いつか。)
- Mata, Itsuka. (また、いつか。)/guide
- Mata, Itsuka. (また、いつか。)/tour
- Matsurikki (まつりっき)
- Matsurikki (まつりっき)/tour
- May
- May/tour
- May (Character)
- Maya
- Maya (MiMiMi)
- Mayu
- Mayumi (まゆみ)
- Me
- Me/guide
- Me/guide/Wallpapers
- Me/reference
- Me/soundtrack
- Me/tour
- Me (character)
- Mea culpa
- Mea culpa/guide
- Mea culpa/tour
- Meaka
- Meiko
- Melodia
- Melody Moonlight
- Melth
- Mementos
- Mementos/guide
- Mementos/tour
- Memoria
- Memoria/tour
- Memorial Playground
- Memorial Playground/guide
- Memorial Playground/tour
- Memories of Replica (メモリーズオブレプリカ)
- Memories of Replica (メモリーズオブレプリカ)/guide
- Memories of Replica (メモリーズオブレプリカ)/soundtrack
- Memories of Replica (メモリーズオブレプリカ)/tour
- Mendum Memoria
- Mendum Memoria/changelog
- Mendum Memoria/guide
- Mendum Memoria/tour
- Mesonoxian
- Mesonoxian/guide
- Mesonoxian/tour
- Mewn
- Mewn/guide
- Mewn/tour
- Me・llow
- Me・llow/guide
- Me・llow/tour
- MiMiMi
- MiMiMi/guide
- MiMiMi/soundtrack
- MiMiMi/tour
- Miaoyami
- Michi
- Michitsuki (みちつき)
- Midoritsuki (みどりつき)
- Mikan
- Mikan Muzou (未完夢像)
- Mikan Muzou (未完夢像)/guide
- Mikan Muzou (未完夢像)/theories
- Mikan Muzou (未完夢像)/tour
- Mike309game
- Miko
- MikuLeRoux
- Mikuchi
- Mild Dream
- Mild Dream/guide
- Mild Dream/tour
- Mimi
- Mimi/tour
- Mimi (Character)
- Mimitsuki (みみつき)
- Mimotsuki
- Mina
- Minazuki (みなづき)
- Mind Color
- Mind Color/guide
- Mind Color/tour
- Mind Reader
- Mind Reader/tour
- Minnatsuki
- Mint
- Miserere
- Miserere/guide
- Miserere/tour
- Miskatonic Diaries
- Miskatonic Diaries/guide
- Miskatonic Diaries/tour
- Miso Nikki (みそにっき)
- Miso Nikki (みそにっき)/guide
- Miso Nikki (みそにっき)/tour
- Misotsuki (味噌付き)
- Missing Memories
- Missing Memories/guide
- Missing Memories/tour
- Mitsuki (みつき)
- MixiM
- MixiM/guide
- MixiM/tour
- Mixtape
- Mixtape/guide
- Mixtape/tour
- Miyo Yanohi
- Mizkura (みずつきくらげ)
- Mizu
- Mizu/guide
- Mizu/tour
- Mnn988
- Modori (もどり)
- Moga
- Mona
- Mona/guide
- Mona/tour
- Mona (Character)
- Mong Jung Mong (몽중몽)
- Mong Jung Mong (몽중몽)/guide
- Mong Jung Mong (몽중몽)/theories
- Mong Jung Mong (몽중몽)/tour
- Monokuro (モノクロ)
- Monotose
- Monotose/guide
- Monotose/tour
- Monotqro
- MoonLess*L
- MoonLess*L/guide
- MoonLess*L/tour
- Moon Cradle
- Moon Cradle/changelog
- Moon Cradle/guide
- Moon Cradle/tour
- Moonday
- Moonday/tour
- Moonlight
- Moonlight/guide
- Moonlight/tour
- Moonlit Lobby
- Moonlit Lobby/guide
- Moonlit Lobby/tour
- Morana
- MorpheusKitami
- Mortalis (モルターリス)
- Mortalis (モルターリス)/guide
- Mortalis (モルターリス)/tour
- Mota
- Motatsuki (もたつき)
- Motel Snooze
- Motel Snooze/tour
- Mother
- Motherland
- Motherland/tour
- Moyatsuki (もやつき)
- Mpiku
- Mr.Meteor
- MuMuMu: Mist of Six Dreams
- MuMuMu: Mist of Six Dreams/guide
- MuMuMu: Mist of Six Dreams/tour
- Mugamuchuu (夢我夢中)
- Mugamuchuu (夢我夢中)/guide
- Mugamuchuu (夢我夢中)/tour
- Mukatsuki (むかつき)
- Mukuchi (無口)
- Mukuro (骸)
- Muma
- Muma Rope (Muma│Rope)
- Muma Rope (Muma│Rope)/guide