Koutalisaurus is a potentially dubious genus of extinct hadrosaurid dinosaur from the Arenysaurini. It is based on a mostly complete dentary from the Maastrichtian-age Upper Cretaceous Tremp Formation near the town of Abella de la Conca, Lleida, Spain.

Arenysaurini is a proposed tribe of primitive lambeosaurine hadrosaurs. It is composed of genera found in Europe and North Africa during the end of the Cretaceous period, and has been suggested to unite all lambeosaurs from the former continent into a singular monophyletic group.