| Named By: | Arthur S. Woodward in 1901 |
| Time Period: | Early Cretaceous, 112 Ma |
| Location: | Argentina - Cerro Barcino Formation, Cerro Castano Member |
| Size: | Uncertain due to lack of fossil remains |
| Diet: | Carnivore |
| Fossil(s): | Partial skull including premaxilla and maxilla and partial dentary, including teeth |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Theropoda | Ceratosauria | Ceratosauridae | |
Genyodectes ("jaw bite", from the Greek words genys ("jaw") and dektes ("bite")) is a genus of ceratosaurian theropod dinosaur from the Lower Cretaceous (Aptian) of South America. The holotype material (MLP 26-39, Museo de La Plata, La Plata, Argentina) was collected from the Canadon Grande, Departamento Paso de Indios in the Chubut Province of Argentina and consists of an incomplete snout, including the premaxillae, portions of both maxillas, the right and left dentary, many teeth, a fragment of the left splenial, and parts of the supradentaries. These elements are generally poorly preserved and some are in articulation. The premaxilla of Genyodectes possesses relatively large and protruding teeth, similar to those of Ceratosaurus. The specific name, serus, means "late".