- Mars of Destruction
- Mars Red
- Martial God Asura
- Martial God Asura 2
- Martial God Stream
- Martial Inverse
- Martial Peak
- Martial Shattered Galaxy
- Martial Universe 3rd Season
- Martial Universe 4th Season
- Martial Universe 5th Season
- Martian Successor Nadesico
- Martian Successor Nadesico: The Prince of Darkness
- Marudase Kintarou
- Maruruk's Everday
- Marvel Avengers Confidential: Black Widow & Punisher
- Marvel Future Avengers
- Marvel Future Avengers 2nd Season
- Mary and the Witch's Flower
- Maryuu Senki
- Masamune Datenicle
- Masamune-kun's Revenge
- Masamune-kun's Revenge OVA
- Masamune-kun's Revenge R
- Mashin Eiyuuden Wataru: Shichikon no Ryuujinmaru
- Mashin Souzouden Wataru
- Mashiroiro Symphony Picture Drama
- Mashiroiro Symphony: The Color of Lovers
- Mashle: Magic and Muscles
- Mashle: Magic and Muscles (Specials)
- Mashle: Magic and Muscles Season 2
- Mask of Zeguy
- Masou Gakuen HxH Specials
- Massara
- Master Keaton
- Master of Mosquiton
- Master of Mosquiton '99
- Master of the Star Spring
- Masuda Kousuke Gekijou Gag Manga Biyori
- Masuda Kousuke Gekijou Gag Manga Biyori +
- Masuda Kousuke Gekijou Gag Manga Biyori 2
- Masuda Kousuke Gekijou Gag Manga Biyori 3
- Masuda Kousuke Gekijou: Gag Manga Biyori Go
- MATASABURO of the Wind
- Matoi the Sacred Slayer
- Mattsu, Yamma and Moburi - The Mystery of the Seven Gems and the Flying Castle
- Mattsu, Yamma and Moburi - The Naval Treasure and Riddle Island
- May I Ask for One Final Thing?
- Mayo Chiki!
- Mayoi Neko Overrun!
- Mayoi Neko Overrun! Specials
- Mayonaka no Occult Koumuin: Fukurokouji to Ano Ko to Ore to
- Mayonaka no Occult Koumuin: Hitoribocchi no Kyuuketsuki
- Maze: The Mega-Burst Space
- Maze: The Mega-Burst Space OVA
- Mazica Party
- Mazinger Edition Z: The Impact!
- Mazinger Z
- Mazinger Z Movie: Infinity
- Mazinger Z tai Ankoku Daishougun
- Mazinger Z vs. Devilman
- Mazinkaiser
- Mazinkaiser SKL
- Me & Roboco
- Me & Roboco Movie
- Mechanical Arms
- Mechanical Arms
- Mechanical Marie
- Medabots
- Medaka Box
- Medaka Box Abnormal
- Medaka Kuroiwa is Impervious to My Charms
- Medalist
- Medalist Season 2
- Mega Man Star Force Tribe
- Megalo Box 2
- Megalobox
- MegaMan NT Warrior
- Megaman Star Force
- Megaman X - The Day of Sigma
- MegaMan: Axess
- MegaMan: Wishing upon a Star
- Megami Kouhosei
- Megami Paradise
- Megane na Kanojo
- Meganebu!
- Megaton-kyuu Musashi
- Megaton-kyuu Musashi 2nd Season
- Megazone 23
- Meiji Gekken: 1874
- Meiji Tokyo Renka
- Meisou-Ou Border
- MEKAKUCITY ACTORS
- Mellow
- Memories
- Memories Off
- Memories Off #5 Togireta Film The Animation
- Memories Off 2nd
- Memories Off 3.5
- Memory of Chang'an
- Memory of Chang'an 2nd Season
- Meow Meow Japanese History
- Meow Meow Japanese History
- Meow Meow Japanese History
- Merc StoriA: The Apathetic Boy and the Girl in a Bottle
- Mermaid Forest
- Mermaid Melody Pichi Pichi Pitch Pure
- Mermaid Melody: Pichi Pichi Pitch
- Mermaid's Scar
- Metal Armor Dragonar
- Metal Fighter Miku
- Metal Skin Panic MADOX-01
- Metallic Rouge
- METAMAN
- Metropolis
- Mew Mew Power
- Mewkledreamy
- Mewkledreamy Mix!
- Mezzo DSA
- Mezzo Forte
- MF Ghost
- MF Ghost 2nd Season
- MF Ghost Season 3
- MFKZ
- Miami Guns
- Michel
- Michiko & Hatchin
- Midnight Crazy Trail
- Midnight occult civil servants
- Midnight Punch
- Midori
- Midori Days
- Mieruko-chan
- Mighty Space Miners
- Migi & Dali
- Mignon
