| Named By: | Martin Ezcurra & Gilles Cuny in 2007 |
| Time Period: | Late Triassic/Early Jurassic, 200 Ma |
| Location: | France, Normandy - Moon-Airel Formation |
| Size: | Around 5-5.2 meters long |
| Diet: | Carnivore |
| Fossil(s): | Partial skeleton including, parts of the hip, some vertebrae from different areas of the spinal column (neck, back, sacrum, tail) and teeth |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Theropoda | Coelophysoidea | |
| Also known as: | | Liliensternus airelensis | |
Lophostropheus (pron.:" LOAF-oh-STRO-fee-us") is an extinct genus of coelophysoid theropod dinosaur that lived approximately 200 million years ago during the boundary between the Late Triassic Period and the Early Jurassic Period, in what is now Normandy, France. Lophostropheus is one of the few dinosaurs that may have survived the Triassic-Jurassic extinction event. Lophostropheus was a small to medium-sized, moderately-built, ground-dwelling, bipedal carnivore, that could grow up to 3 m (9.8 ft) long. Over the years it had been incorrectly classified as Halticosaurus and Liliensternus, but was later recognized as a new genus and was reassigned to Lophostropheus in 2007.