| Named By: | Lydekker in 1893 |
| Time Period: | Late Cretaceous |
| Location: | Argentina |
| Size: | Unknown |
| Diet: | Herbivore |
| Fossil(s): | Single dorsal vertebra |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Sauropoda | Titanosauria | |
Microcoelus is a dubius genus of small Titanosaurian sauropod dinosaur native to Argentina. It is known from only a single dorsal vertebra. A left humerus was formerly referred to this species, but it is now considered to belong to Neuquensaurus. This species may be a synonym of the contemporary sauropod Neuquensaurus australis.