The Isanosaurus is a herbivore from the Early Triassic Period. The Isanosaurus name actually means Northeastern Thailand Lizard based on where it was first discovered, Nam Phong Formation, Thailand, Asia. It was described by Buffetaut, Suteethorn, Cuny, Tong, Le Loeuff, Khansubha & Jongautchariyakui in the year 2000.

This dinosaur is mostly known as one of the very first dinosaur to exist. The Isanosaurus is actually an early sauropod.