Gerardia

Gerardia may refer to:
 * Gerardia L., a plant genus now a synonym of Stenandrium Nees in family Acanthaceae
 * Gerardia Benth., a plant genus now a synonym of Agalinis Raf. in family Orobanchaceae
 * Gerardia Lacaze-Duthiers, 1864, a genus of cnidarians, now a synonym of Savalia Nardo, 1844
 * Common names of several species of Agalinis Raf. formerly in Gerardia Benth., including:
 * Agalinis acuta
 * Agalinis auriculata
 * Agalinis purpurea
 * Agalinis skinneriana
 * Agalinis tenuifolia