Fuyuansaurus is an extinct genus of "protorosaur" reptiles (probably part of Tanystropheidae) known from the Middle Triassic (Ladinian stage) Zhuganpo Formation of southern China.

This skeleton includes part of the skull, most of the neck, and portions of the trunk, shoulder girdle, and hip.

The maxilla was covered with longitudinal grooves and possibly had a depression on its side, although the overlapping bones makes it difficult to come to specific conclusions about the area.

The dorsals immediately behind the shoulder girdle had expanded buttress-like transverse processes (projections which connect to the ribs).

This is in contrast to typical tanystropheids, which have the pubis and ischium curve towards each other, often contacting each other at the bottom to enclose a hole termed the thyroid fenestra.