| Named By: | Friedrich von Huene in 1932 |
| Time Period: | Late Cretaceous, 70 Ma |
| Location: | Europe, Romania |
| Size: | 6 meters long |
| Diet: | unavailable |
| Fossil(s): | 10 individuals, possibly more |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Sauropodomorpha | Sauropoda | Titanosauria | |
Magyarosaurus ("Magyar lizard") is a genus of dwarf sauropod dinosaur from late Cretaceous Period (early to late Maastrichtian) in Romania. It is one of the smallest-known adult sauropods, measuring only six meters in length. The type species is Magyarosaurus dacus. Magyarosaurus was found to be a close relative of Rapetosaurus in the family Saltasauridae in the sauropod clade Titanosauria in a 2005 study of the titanosaurs by Kristina Curry Rogers.