Opaline (disambiguation)

Opaline may refer to:
 * Opaline, a group of protists
 * Opaline, an album by Dishwalla
 * Opaline glass, decorative French glass
 * Opaline silica: an amorphous or cryptocrystalline form of hydrated silica SiO2·nH2O (Opal)
 * Opaline, a colour mutation of the budgerigar, Melopsittacus undulatus