Qianosuchus is an extinct genus of aquatic poposauroid archosaur from the middle Triassic (Anisian) Guanling Formation of Pan County, China.

Qianosuchus was at least 3 metres long, and had several skeletal adaptations which indicate a semi-marine lifestyle, similar to modern-day saltwater crocodiles.

The nares are expanded and elongated and almost collide with the antorbital fenestrae, meaning that the septum (bony wall) between them is thin and lightweight.

The dentary turns down very slightly at the tip; a precise tooth count is unknown due to the bone being hidden by the maxillary teeth in the fossils.

The cervical ribs are elongate, at least four times the length of their corresponding centra, and may have had strong muscles attached enabling it to create suction in its throat while lunging forward at prey by expanding the oesophagus.

Its coracoid bones were oval-shaped and quite thin, while its clavicles articulated almost at right angles with the interclavicle to form an L-shaped outline from the side.

However, its pelvic girdle and large, relatively unspecialized legs would have allowed Qianosuchus to walk around on land as well, and may well have had an erect or semi-erect posture, based on the ankle joint.