Look up sedna in Wiktionary, the free dictionary.
Sedna may refer to:
- Sedna (mythology), the Inuit goddess of the sea
- Sedna (dwarf planet), a trans-Neptunian dwarf planet
- Sedna (beverage), a tonic wine, formerly made in Belfast
- Sedna (database), a native XML database
- Doriprismatica sedna, a species of nudibranch
- Sedna Finance, a structured investment vehicle
- Sedna Planitia, a landform on the planet Venus
- Sedna pirata, a species of solifuge, and its monotypic genus Sedna