- Marches Comes in Like a Lion: Special Omnibus Episode
- Marco Polo's Adventures
- Mardock Scramble: The First Compression
- Mardock Scramble: The Second Combustion
- Mardock Scramble: The Third Exhaust
- MARGINAL #4 the Animation
- Marginal Prince: Gekkeiju no Ouji-tachi
- Marginal Prince: Gekkeiju no Ouji-tachi - Tokyo Merry-Go-Round
- Maria the Virgin Witch
- Maria Watches Over Us
- Maria Watches Over Us
- Maria Watches Over Us 3rd
- Maria Watches Over Us Season 4
- Maria Watches Over Us: Printemps
- Maria Watches Over Us: Printemps
- Maria†Holic
- Maria†Holic Alive
- Marie & Gali
- Marie & Gali Episode Zero
- Marie & Gali Special
- Marie & Gali ver. 2.0
- Marimo no Hana: Saikyou Butouha Shougakusei Densetsu
- Maris the Chojo
- Marmalade Boy
- Maroko
- Marriage
- Marriage of God & Soul Godannar!!
- Marriage of God & Soul Godannar!! 2nd Season
- Mars Daybreak
- Mars of Destruction
- Mars Red
- Martial God Asura
- 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
- 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
- Mechanical Arms
- Mechanical Arms
- Mechanical Marie
- Medabots
- Medaka Box
- Medaka Box Abnormal
- Medaka Kuroiwa is Impervious to My Charms
- Medalist
- 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
