Kossmaticeras is an extinct ammonoid genus belonging to the desmoceratacean family Kossmaticeratidae.

Species in this genus were fast-moving nektonic carnivores.

[1] They lived during the Late Cretaceous, from the upper Turonian to the upper Maastrichtian ages.

[2] The type species of the genus is K.

[1] [1] Fossils of species within this genus have been found in the Cretaceous sediments of Antarctica, Australia, Canada, Chile, India, Madagascar, New Zealand and South Africa.