Series starting with K
- K.O. Sen
- K.O.マサトメ
- Kaedegami
- Kagami no Kuni no Harisugawa
- Kagamigami
- Kagijin
- Kagurabachi
- Kaido Racer GO
- Kaijin Gonzui
- Kaiki! Manatsu no Yawa
- Kain
- Kaitei Poseidon
- Kaizer Spike
- Kajika
- Kajiko
- Kakumeiji Gebara
- Kami-sama wa Southpaw
- Kanagawa Isonan Futen-gumi
- Kannade
- Kaosu Kanburiya
- Kappa Revolution: Odore! Kappa Step
- Karakurizoshi Ayatsuri Sakon
- Karasuman
- Karate Inochi
- Kasane
- Katsu made Nakuna!
- Kawaii Gambler
- Kaze! Hana! Ryu!
- Kazoku Dobutsuen
- Keiji
- Keisatsuken Monogatari Keishicho Kanshikika Amano Shigeo Funtoki
- Kenkaku Shibui Kakinosuke
- Kenritsu Umisora Koko Yakyu Buin Yamashita Taro-kun
- Keppare! Ota-Toshu
- Key Girl
- Kiben Gakuha, Yotsuya-Senpai no Kaidan
- Kick Off
- Kick-o Sawamura Senpu
- Kickboxer Mamoru
- Kicks Megamix
- Kid
- Kikai-banashi Hanasaka Ikkyu
- Kill Blue
- Killer Boy
- Kimagure Orange Road
- Kimi wo Shinryakuseyo! (Invade You)
- Kinato's Magic
- Kinnikuman
- Kirara
- Kirihoshi
- Kirin: The Last Unicorn
- Kirisakareta Seishun
- Kochira Katsushika-ku Kameari Koen-mae Hashutsujo (Kochikame)
- Koganeiro
- Koi no Cupid Yakeno Harajin
- Koisome Momiji
- Koisuru Edison
- KOMOREBI: Under the dappled sun
- Koshi Ankokuden
- Koshien no Okami
- Koya no Shonen Isamu
- Kujira Daigo
- Kuon...
- Kurage Chuni
- Kurayami wo Buttobase!
- Kurobe Hikyo Monogatari: Hasaitai wo Nuke
- Kurogane
- Kurohige Tanteicho
- Kuroki Taka
- Kuroko's Basketball
- Kurokuroku
- Kuso Bozu Gantetsu
- Kyojin-tachi no Densetsu
- Kyokuto Necromance
- Kyoryu Daikiko
- Kyukyoku!! Hentai Kamen
- Kyusoku 0.25-byou!