Lily can refer to:
- Lilies, large white flowers seen throughout Middle-earth
- Water-lilies, large flowers seen on the surface of water.
- Lily Baggins (S.R. 1222 - S.R. 1312), great-aunt of Bilbo Baggins.
- Lily Brown, mother of Rose Cotton.
- Lily, the Draper's daughter, in Smith of Wootton Major.
- "Lily of the Valley", translation of Lothengriol, one of the seven names of Gondolin.