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CCDB → Angiosperms → Hydrocharitaceae → Ottelia
| Taxon name | Status | Median (n) |
| Ottelia acuminata (Gagnep.) Dandy | Accepted | 11 |
| Ottelia alismoides (L.) Pers. | Accepted | 30 |
| Ottelia cordata (Wall.) Dandy | Accepted | 11 |
| Ottelia emersa Z. C. Zhao & R. L. Luo | Accepted | 11 |
| Ottelia crispa (H. -Mazz.) Dandy | Synonym of Ottelia acuminata var. crispa (H. -Mazz.) H. Li | 10 |
| Ottelia lanceolata (Gagnep.) Dandy | Synonym of Ottelia alismoides (L.) Pers. | 30 |