Watsonia

Watsonia can refer to:


 * Watsonia (gastropod), a genus of sea snails in the family Caecidae
 * Watsonia (plant), a genus of flowering plants in the iris family
 * Watsonia (journal), now the New Journal of Botany
 * Watsonia, Victoria, a suburb of Melbourne, Australia
 * Watsonia railway station