| Oenosaurus Temporal range: | |
|---|---|
| Holotype skull in multiple views | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Rhynchocephalia |
| Family: | †Sapheosauridae |
| Genus: | †Oenosaurus Rauhut et al., 2012 |
| Type species | |
| †Oenosaurus muehlheimensis Rauhut et al., 2012 | |
Oenosaurus is an extinct genus of sphenodontian reptile from the Late Jurassic (Tithonian) aged Mörnsheim Formation of Germany.

The genus is known from a partial skull preserved in ventral view. The teeth in the upper and lower jaws were fused into tooth plates.
It is likely that Oenosaurus led a durophagous lifestyle as indicated by the broad tooth plates. It is unknown if this animal was aquatic or terrestrial.
It is currently considered to be a sapheosaur.