Brachysuchus (meaning "wide crocodile") is an extinct genus of phytosaur known from the late Triassic period (Carnian stage) of Dockum Group in Texas, United States.

The lower jaws of Brachysuchus are expanded at the tip to form a large bulge, holding the creature's largest tusks.

In parts of the jaws the fused section in the middle rises so high that the teeth could only grip prey and could probably have done little damage.

This, as well as the cutting teeth mentioned earlier, indicates that Brachysuchus preyed on different animals to its thinner-jawed relatives.

Instead of using its jaws to catch fish, it was able to attack and feed off the heavily armoured stegocephalians that roamed the surrounding area, and would probably have eaten other phytosaurs if food was scarce.

The slightly deformed tip of one specimen's lower jaw suggests that it used a lot of force to break through its prey's armour.