| Named By: | Etienne Geoffroy SaintinHilaire in 1825 |
| Time Period: | 183-163 Ma Toarcian - Callovian |
| Location: | England, France, Germany, Madagascar, Morocco and Switzerland |
| Size: | Commonly between 2.5 and 3.5 meters long. Largest species S. heberti up to 5 meters long |
| Diet: | Piscivore |
| Fossil(s): | Multiple specimens |
| Classification: | | Chordata | Reptilia | Archosauromorpha | Mesoeucrocodylia | Thalattosuchia | Teleosauridae | |
| Also known as: | | Aeolodon | Leptocranius | Mycterosuchus | Mystriosaurus | Sericodon | |
Steneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Middle Jurassic (Toarcian to Callovian). Fossil specimens have been found in England, France, Germany, Switzerland and Morocco. The largest species, S. heberti, reached up to 5 m (16.5 ft) long, though 2.5-3.5 m was far more common.