| Title | Format | Country | Volumes | State |
|---|---|---|---|---|
| Rāmen Daisuki Koizumi-sanラーメン大好き小泉さん | Manga | Japan | 6 | Ongoing |
| Ratman ~Qui n'a jamais rêvé de devenir un super-héros ?~ | Manga | France | 12 | Completed |
| Re-Kan!レーカン！ | Manga | Japan | 10 | Ongoing |
| Reborn! ~Mon prof le tueur~ | Manga | France | 42 | Ongoing |
| Reki & Yomi ~Sœurs en discorde~ | Manga | France | 1 | Ongoing |
|
|
Manga | Japan | 15 | Completed |
| ReLIFE | Manga | France | 15 | Completed |
| Rin-chan Nowリンちゃんなう | Manga | Japan | 4 | Unknown |
| Rosario + Vampire | Manga | France | 10 | Completed |
| Rosario + Vampire saison 2 | Manga | France | 14 | 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 |
|
|
Manga | Japan | 8 | Completed |
|
|
Manga | Japan | 7 | Completed |
| 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 |