| Named By: | S. G. Dalman in 2014 |
| Time Period: | Late Jurassic, 155-147 Ma |
| Location: | USA, Wyoming - Morrison Formation (Brushy Basin Member) |
| Size: | Paratype fibula 27.5 centimetres long. Scaled and reconstructed to Elaphrosaurus proportions results in a rough estimate of up to about 2.5 meters long |
| Diet: | Carnivore |
| Fossil(s): | Tibia, astralgus and fibula from two individuals |
| Classification: | | Chordata | Reptilia | Saurischia | Theropoda | Ceratosauridae | |
Fosterovenator (meaning "Foster's hunter") is a genus of ceratosaurid ceratosaur dinosaur known from the Late Jurassic Morrison Formation of Wyoming. The holotype is YPM VP 058267A, B, and C, a tibia with an articulated astragalus. An additional specimen is known, the paratype YPM VP 058267D, a fibula of a larger individual.
The holotype remains were discovered at Como Bluff, Wyoming, and consist of a nearly-complete right tibia with a co-ossified astragalus. The paratype consists of a complete right fibula measuring 27.5 cm (10.8 in) in length and belonging to a much larger individual. The overall shape of the known material is similar to that of Elaphrosaurus. However, ceratosaurian affinities of Fosterovenator (at least of the paratype) have been questioned.