Calamus

The genus name Calamus may refer to:

Animalia:
- Calamus Swainson, 1839 (Actinopterygii, Sparidae)
- Calamus Saussure, 1862, junior homonym = synonym of Cannula Bolívar, 1906 (Orthoptera, Acrididae)

Plantae:
- Calamus L. (1753) (Arecales, Arecaceae)
- Calamus Garsault (1764), nom. illeg. = synonym of Acorus L. (Acorales, Acoraceae)

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