Calamus
Calamus may mean:
- Calamus (Kalamos), a figure in Greek mythology
- Botany and zoology
- Sweet Flag (Acorus calamus), a tall wetland plant
- Calamus (palm), a genus of rattan palms
- Calamus (fish), a genus of fish in the family Sparidae
- Calamus, the hollow shaft of a feather, also known as the quill
- Place names
- Calamus, Iowa, United States
- Calamus, Wisconsin, United States
- Calamus Swamp, Ohio, United States
- Other uses
- Calamus (DTP), a desktop publishing application
- Calamus (poem), a series of poems by American writer Walt Whitman
- Calamus Ensemble, a Classical Music Artist