Acanthoscaphites is an extinct genus of cephalopod belonging to the Ammonite subclass.

The average diameter of its shell was approximately 20 millimetres (3⁄4 inch), but some specimens have been found with a diameter of slightly over 50 mm (2 in).

Subsequent taxonomic revisions indicate that the relationship between Acanthoscaphites and Trachyscaphites is still unclear: Acanthoscaphites may have evolved in parallel with or as a derivative of Trachyscaphites.

[1] Species Acanthoscaphites was a widespread genus during Campanian and Maastrichtian times, approximately 80 million years ago.

[1] Its remains can be found in rocks of that age from Europe and North America.