New soldier beetles (Cantharidae) are described from amber deposits in Burma (Myanmar), the Baltic region and the Dominican Republic. They include the Lower Cretaceous Burmese amber Ornatomalthinus elvirae gen. et sp. n., the Upper Eocene Baltic amber Rhagonycha (s. str.) sucinobaltica sp. n. and the mid-Tertiary Dominican amber Tytthonyx (s. str.) geiseri sp. n. These are the first descriptions of soldier beetles from Burmese and Dominican amber. The new genus Ornatomalthinus in Burmese amber is noted for possessing features similar to lycid beetles (Coleoptera: Lycidae) and for emitting, presumable defensive, secretions from everted thoracic and abdominal vesicles.