| Named By: | Werner Janensch in 1914 |
| Time Period: | Late Jurassic, 155-150 Ma |
| Location: | Tanzania |
| Size: | 12 meters long |
| Diet: | Herbivore |
| Fossil(s): | Remains for the identification of two species |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Sauropodomorpha | Diplodocoidea | Dicraeosauridae | |
Dicraeosaurus (Gr. dikraios, dikraios "bifurcated, double-headed" + Gr. sauros, sauros "lizard") is a genus of small diplodocoid sauropod dinosaur. It was named for the spines on the back of the neck. The first fossil was described by paleontologist Werner Janensch in 1914.