| Title | Format | Country | Volumes | State |
|---|---|---|---|---|
| The Rising of the Shield Hero | Artbook | France | 1 | Completed |
| Risō no Himo Seikatsu理想のヒモ生活 | Manga | Japan | 8 | Ongoing |
| Rito no Umiりとうのうみ | Manga | Japan | 1 | Completed |
| Ritz立‐Ritz‐ | Manga | Japan | 1 | Completed |
| Rockin' Heaven | Manga | France | 8 | Completed |
| Rockin' Heaven | Manga | France | 3 | Ongoing |
| Le ROI des RONCES | Manga | France | 6 | Completed |
| Roji ! | Manga | France | 11 | Completed |
| Rokka Melt ~Mes adorables hommes des neiges~ | Manga | France | 4 | Ongoing |
| Romantica Clockロマンチカ クロック | Manga | Japan | 4 | Ongoing |
| Ronya, fille de brigand | Novel | France | 1 | Completed |
| RORORRO!ロロッロ! | Manga | Japan | 5 | Ongoing |
| Rosario + Vampire | Manga | France | 10 | Completed |
| Rosario + Vampire ~Guide Book~ | Fanbook | France | 1 | Completed |
| Rosario + Vampire saison 2 | Manga | France | 14 | Completed |
| Rose Hip Rose | Manga | France | 4 | Completed |
| Rose Hip Zero | Manga | France | 5 | Completed |
| Rozen Maiden | Manga | France | 8 | Completed |
| Rozen Maiden | Manga | France | 7 | Completed |
| Rozen Maidenローゼンメイデン | Manga | Japan | 10 | Completed |
| Rozen Maiden - Saison 2 | Manga | France | 10 | Completed |
| Rozen Maiden “Bara Shōjo” ~Rozen Maiden Illustrations~ローゼンメイデン「薔薇乙女」～Rozen Maiden Illustrations～ | Artbook | Japan | 1 | Completed |
|
|
Manga | Japan | 8 | Completed |
|
|
Manga | Japan | 7 | Completed |
| Rozen Maiden 0ローゼンメイデン0―ゼロ― | Manga | Japan | 4 | Ongoing |
| Rumic World ~1orW~ | Manga | France | 1 | Completed |
|
Rumic World ~1orW~るーみっくわーるど |
Manga | Japan | 1 | Completed |
| Ryū no Gakkō ha Yama no Ue ~Kui Ryūko Sakuhin Shū~竜の学校は山の上～九井諒子作品集～ | Manga | Japan | 1 | Ongoing |
| Ryūō no Oshigotoりゅうおうのおしごと | Manga | Japan | 9 | Ongoing |
| Ryuoh no Oshigotoりゅうおうのおしごと | Light novel | Japan | 8 | Ongoing |
| Ryūshika Ryūshikaリューシカ・リューシカ | Manga | Japan | 10 | Completed |