| Name | Alternative/Original Name | Tags |
|---|---|---|
| Kana Nishino | 西野カナ | Female, Japanese, J-Pop |
| Kenji Ohtsuki | Male, J-Rock, Japanese | |
| Keno | キーノ | Male, Japanese, J-Pop |
| Kiroro | キロロ | Female, Band, Japanese, J-Pop |
| Koji Wada | 和田光司 | Male, J-Rock, Japanese |
| Konata Izumi (Aya Hirano) | 泉こなた（平野綾） | Female, Character, Japanese, J-Pop |
| KOTOKO | Female, Japanese, J-Pop | |
| Kumi Kouda | 倖田來未 | Female, Japanese, J-Pop |
| Kyary Pamyu Pamyu | きゃりーぱみゅぱみゅ | Female, Japanese, J-Pop |
| Kyu Sakamoto | 坂本九 | Male, Kayokyoku, Japanese |
| L'Arc~en~Ciel | J-Rock, Band, Japanese | |
| Ling Tosite Sigure | 凛として時雨 | J-Rock, Band, Japanese |
| Linked Horizon | Band, Japanese, J-Pop | |
| LiSA | Female, Japanese, J-Pop | |
| little by little | Band, Japanese, J-Pop | |
| LOREN & MASH | Female, Japanese, J-Pop | |
| Luna Haruna | 春奈るな | Female, Japanese, J-Pop |
| Luna Sea | J-Rock, Band, Japanese | |
| Maaya Sakamoto | 坂本真綾 | Female, Japanese, J-Pop |
| Maaya Sakamoto feat. Steve Conte | Female, English, Collaboration, Japanese, J-Pop | |
| Mai Yamane | 山根麻以 | Female, Japanese |
| Maki Ohguro | 大黒摩季 | Female, Japanese, J-Pop |
| Makoto Kawamoto | 川本真琴 | Female, Japanese, J-Pop |
| Malice Mizer | J-Rock, Band, Japanese | |
| MAN WITH A MISSION | J-Rock, Band, Japanese |