| Named By: | Andrews in 1901 |
| Time Period: | Late Eocene-Early Oligocene |
| Location: | Egypt, Ethiopia & Saudi Arabia |
| Size: | Uncertain |
| Diet: | Herbivore |
| Fossil(s): | Several individuals |
| Classification: | | Chordata | Mammalia | Eutheria | Afrotheria | Proboscidea | |
Palaeomastodon an extinct genus of Proboscidea. Palaeomastodon fossils have been found in Africa, lived some 36-35 million years ago. They are believed to be the ancestors of elephants or mastodons.
Palaeomastodon had tusks, both upper and lower, and it had a trunk. It was about 2.2 metres (7 ft 3 in) tall at the shoulder and weighed about 2.5 tonnes (2.5 long tons; 2.8 short tons). The lower tusks were flat rather than pointed cones, and were probably used to scoop plants from swampy water.