Tholodus is an extinct genus of basal ichthyopterygian known from the Middle Triassic (mid-late Anisian to late Ladinian stage) of Germany, northeastern Italy and possibly China.

It was first named by Christian Erich Hermann von Meyer in 1851 and the type species is Tholodus schmidi.

Dalla Vecchia (2004) recently described two additional specimens, a mandibular ramus and a maxilla, both bearing teeth and nearly uncrushed, and some postcranial remains, from a single late Anisian outcrop, from the southern Alps of Italy.

The humerus resembled that of immature individuals of the Asian genus Chaohusaurus, suggesting possible affinities to Grippidia.

[2] Jiang et al. (2008) described and named Xinminosaurus from the mid-late Anisian Guanling Formation of Guizhou, China.