Cryptocheilus is a genus of spider wasps of the subfamily Pepsinae, found in the world's warmer regions.

They vary in size from medium to large and are often strikingly coloured.

They are found in open habitats such as heaths, meadows and forest edges.

There are 24 species of Cryptocheilus known from Europe, 6 from North America and 2 recently described from the Neotropics.

[2] Selected species include[2] This Apocrita-related article is a stub.