Ceratomia undulosa, the waved sphinx, is a moth of the family Sphingidae.

[citation needed] It is found in the United States, and southern Canada, east of the Rocky Mountains.

Adult moths are strictly nocturnal, hiding away as dawn approaches (Fullard & Napoleone 2001).

Recorded food plants of the larvae include ash (Fraxinus), privet (Ligustrum), oak (Quercus), hawthorn (Crataegus) and fringe tree (Chionanthus virginicus).

The most common predator is the Guiana Striped Scorpion, which feasts on the moth's egg clusters.