Costia
The genus name Costia may refer to:
- Costia Willk., 1858 nom. illeg. = Agropyron Gaertn., Poaceae
- Costia Willk., 1860 nom. illeg. = Iris, Iridaceae
- Costia E.Leclercq, 1890 nom. illeg. = Ichthyobodo, Protozoa
The genus name Costia may refer to: