| Named By: | Broili in 1927 |
| Time Period: | Middle Triassic, Ladinian |
| Location: | Italy - Calcare di Meride Formation and Switzerland - Meride Formation |
| Size: | About 1 meter long |
| Diet: | Carnivore/Piscivore |
| Fossil(s): | Few individuals |
| Classification: | | Chordata | Reptilia | Sauropterygia | Nothosauroidea | Pachypleurosauria | |
Neusticosaurus (sometimes misspelled Neuticosaurus) ("swimming lizard"), is an extinct genus of marine reptile belonging to the nothosaur order, from Italy, Switzerland and Germany. At 18 cm (8 in) long, it was one of the smallest nothosaurs. Neusticosaurus probably fed on small fish.