The Lisandro Formation, alternatively known as the Cerro Lisandro Formation, is a Late Cretaceous (Late Cenomanian to Early Turonian) geologic formation with outcrops in the Neuquén, Río Negro and Mendoza Provinces of Argentina.

It is the youngest formation within the Río Limay Subgroup, the lowest section of the Neuquén Group.

It is composed of siltstones and claystones, red in color, which have been interpreted as a swampy to fluvial environment.

Usually, the red Lisando Formation rocks are easy to distinguish from the greenish or yellowish deposits of the Huincul Formation.

[1][3] Not many dinosaurs are represented in the Lisandro Formation; other types of animals are frequently found.