Shansisuchus (meaning "Shanxi Province crocodile") is an extinct genus of archosauriform reptile belonging to the family Erythrosuchidae that lived during the Middle Triassic in what is now China.

[3] Shansisuchus is a large erythrosuchid distinguished from other members of the group by two characters: a tongue-and-groove articulation between the premaxilla and nasal bones of the skull and the presence of a subnarial fenestra.

[3] Shansisuchus belongs to a group of reptiles called Archosauriformes, which is today represented by crocodilians and birds but also includes a diversity of extinct forms extending back to the Late Permian.

A phylogenetic analysis published in 2013 found that Vjushkovia was more closely related to Erythrosuchus, and that Shansisuchus lied outside the Vjushkovia+Erythrosuchus clade as a more basal erythrosuchid.

Below is a cladogram from the 2013 analysis:[3] Proterosuchus Sarmatosuchus Fugusuchus Koilamasuchus Osmolskina Shansisuchus Erythrosuchus Vjushkovia Euparkeria Chanaresuchus Avemetatarsalia Pseudosuchia