Otome Series Beginning with M
- Meikyu Black Company
- Meitantei Holmes
- Memories
- Memories Off
- Men's Non-No
- Mermaid Melody Pichi Pichi Pitch
- Metal Gear Solid
- Mewkledreamy
- MEZZO
- Micchaku CD Series
- Midnight Detective -Night Walker-
- Midnight Occult Civil Servants
- Midori no Hibi
- Migawari Hakushaku Series
- Migi to Dali
- Mikagura Gakuen Kumikyoku
- Mimankeisatsu Midnight runner
- Mina
- Minamike
- Minions
- Minna no Uta
- Miracle Train
- Miscast
- Miss Monochrome
- Missing Blue
- Mission: Yozakura family
- Mitokoumon
- Mitsubachi Shuppan Series
- Mitsudomoe
- MIX
- Mizu no Senritsu
- Mm!
- Mnemosyne no Musume Tachi
- Mob Psycho 100
- Mobile Suit Gundam
- Mobile Suit Gundam Gundam GQuuuuuuX
- Mobile Suit Gundam SEED
- Mobile Suit Gundam Seed Destiny
- Mobile Suit Gundam THE WITCH FROM MERCURY
- Mobile Suit Gundam Thunderbolt
- Mobile Suit Z Gundam (Zeta Gundam)
- Moe Theme
- Moekan
- Moetan
- Momo and Grapes Company Series
- Momokuri
- Mon-Colle-Knight
- MONKEY MAGIC
- Monkey Turn
- mono
- Monochrome Factor
- Mononogatari
- Mononoke
- Monster
- Monster collection
- Monster Hunter
- Monster Musume no Iru Nichijo (Everyday Life with Monster Girls)
- Monster Retsuden Oreka Battle
- Monster Strike
- Monthly MOH Scientific
- Moomin
- Moon-led Journey Across Another World (Tsuki Ga Michibiku Isekai Dochu)
- Moonlight Mile
- More
- Moretsu Pirates (Moretsu Uchu Pirates)
- Moryo no Hako
- Moshidora
- Moso Esthe
- Moso Kagaku Series Wandaba Style
- Moso Voice CD
- Mou Hitotsu no Nihonshi Shirarezaru Busho Tachi no Utage
- Mouse
- Moyashimon
- Mr. Digital Tokoro
- Mr. Villain's Day Off
- MS Gundam 00
- MS Gundam UC
- Mudazumo Naki Kaikaku
- Muhyo & Roji's Bureau of Supernatural Investigation (Muhyo to Roji no Mahoritsu Sodan Jimusho)
- Mujin Wakusei Survive
- MUNTO
- Murai in Love
- Muryou
- Mushishi
- Mushiuta
- Mushoku Tensei
- Muteki Kanban Musume
- MUTEKING
- Mutekiou Trizenon
- MUV-LUV
- My Father is a Hero, My Mother is a Spirit, and I am a Reincarnator.
- My Happy Marriage
- My Hero Academia
- My HiME
- My New Boss Is Goofy
- My Otome
- Myriad Colors Phantom World
- Myself;Yourself
- Mysterious Disappearances
- Mystery to iu Nakare