Patagopelta (meaning "Patagonian shield") is an extinct genus of ankylosaurian dinosaur from the Late Cretaceous (upper Campanian–lower Maastrichtian) Allen Formation of Argentina.

The Patagopelta fossil material was found in sediments of the Allen Formation (Salitral Moreno locality) near General Roca, Río Negro Province, Argentina.

The generic name, "Patagopelta", is derived from "Patago", a reference to the discovery of the taxon in Argentinian Patagonia, and the Greek word "pelta", meaning "shield".

[5] In their 2024 redescription of Antarctopelta, Soto Acuña, Vargas & Kaluza further elaborated on this, explaining that the discovery of additional fossil material allowed for a rescoring of its characters in their phylogenetic matrix.

Many other dinosaurs, including titanosaurs (Aeolosaurus, Bonatitan, Menucocelsior, Panamericansaurus, Pellegrinisaurus, and Rocasaurus), hadrosaurids (Bonapartesaurus, Kelumapusaura, and Lapampasaurus), abelisaurids (Niebla and Quilmesaurus), dromaeosaurids (Austroraptor), and alvarezsaurids (Bonapartenykus), have been named from the formation.