Undine (disambiguation)
- 92 Undina
- Alexei Lvov
- Aria (manga)
- Harald Naegeli
- Ingeborg Bachmann
- John William Waterhouse
- List of Claymore characters
- Olive Schreiner
- Once I Was an Eagle
- Ondine (disambiguation)
- Penni Russon
- Phyllis Brett Young
- Primal (video game)
- Prokofiev
- Préludes (Debussy)
- Seamus Heaney
- Sleepless Domain
- Sonata Undine
- Species 8472
- The Custom of the Country
- Undina (Tchaikovsky)
- Undina (fish)
- Undine
- Undine (1916 film)
- Undine (2020 film)
- Undine (Colorado River sternwheeler)
- Undine (Columbia River sternwheeler)
- Undine (Hoffmann)
- Undine (Lortzing)
- Undine (medical)
- Undine (novella)
- Undine Barge Club
- Undine Wells
- Undine, Georgia
- Undine, Michigan
- Undyne
- Yggdra Union
- Yui Makino