| Named By: | Pohlig in 1912 |
| Time Period: | Pliocene-Late Pleistocene~4.9-0.03 Ma |
| Location: | North and South America |
| Size: | Up to 2.8 meters high at the shoulder, tusks can be up to 3.5 meters long |
| Diet: | Herbivore |
| Fossil(s): | Multiple specimens |
| Classification: | | Chordata | Mammalia | Proboscidea | Gomphotheriidae | |
| Also known as: | | Mastodon successor | Stegomastodon arizonae | Stegomastodon texanus | Stegomastodon rexroadensis | |
Stegomastodon ('roof breast tooth') is an extinct genus of gomphothere, a family of proboscideans. It is not to be confused with the genus Mammut from a different proboscidean family, whose members are commonly called "mastodons", nor with the genus Stegodon, from yet another proboscidean subfamily, whose members are commonly called "stegodonts". The Stegomastodon was one of the smaller species through the genus. It ranged through North and possibly South America.