| Named By: | E. Tschopp, O. Mateus & R. B. J. Benson in 2015 |
| Time Period: | Late Jurassic, 155-152.9 Ma |
| Location: | USA, Morrison Formation deposits in Colorado and Wyoming |
| Size: | Holotype individual roughly about 27 meters long based upon 1.44 meter femur, 0.98 meter fibula and scaled to standard diplodocine diplodocid sauropod proportions |
| Diet: | Herbivore |
| Fossil(s): | Skulls and partial post cranial fossils from several individuals |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Sauropoda | Diplodocidae | Diplodocinae | |
| Also known as: | | Diplodocus hayi | |
Galeamopus is a genus of herbivorous diplodocid sauropod dinosaurs. It contains two known species: Galeamopus hayi, known from the Late Jurassic lower Morrison Formation (Kimmeridgian age, about 155 million years ago) of Wyoming, United States, and Galeamopus pabsti, known from the Late Jurassic fossils from Wyoming and Colorado. The type species is known from one of the most well preserved diplodocid fossils, a nearly complete skeleton with associated skull.