Protathlitis (meaning "champion") is a genus of spinosaurid dinosaur from the Early Cretaceous (Barremian) Arcillas de Morella Formation of Castellón, Spain.

The genus name, "Protathlitis", is Greek for "champion", and is dedicated to the 2020–21 UEFA Europa League won by Villareal C.F.

[1] In 2024, Montealegre, Castillo-Visa & Sellés tentatively assigned specimen IPS919, a nearly complete tooth including a partial root from the Arcillas de Morella Formation, to cf.

[3] Santos-Cubedo et al. (2023) performed a phylogenetic analysis, placing Protathlitis as the basalmost member the Baryonychinae.

It coexisted in this environment with other dinosaurs including the ornithischians Iguanodon bernissartensis and Morelladon beltrani, an indeterminate sauropod, and the fellow spinosaurid Vallibonavenatrix.