Occithrissops is an extinct genus of ray-finned fish of the Jurassic, described from Sundance Formation.

[1] Occithrissops reached length about 20 centimetres (7.9 in).

Although it is placed within Ichthyodectiformes, it have some different characters compared to other Jurassic ichthyodectiform Thrissops and Allothrissops, and original description described this taxon as Ichthyodectiformes incertae sedis.

[1] Later study considered this taxon is basal ichthyodectiform, and shared some morphological similarities with Jinjuichthys.

This article about a prehistoric ray-finned fish is a stub.