Aetobarbakinoides is an extinct genus of stagonolepidid aetosaur known from the Late Triassic of Rio Grande do Sul state, southern Brazil.

Fossils have been found from the Santa Maria Supersequence of the late Carnian and early Norian stages, making Aetobarbakinoides one of the oldest aetosaurs.

It was collected in the Inhamandá locality, from the Hyperodapedon Assemblage Zone, Sequence 2 of the Santa Maria Supersequence (formerly known as Santa Maria Formation) which dates back to the late Carnian and earliest Norian stages of the Late Triassic.

Along with the genus Aetosauroides from Argentina and Brazil and Stagonolepis robertsoni from Scotland, Aetobarbakinoides is among the oldest aetosaurs.

This study suggests that Aetosaurinae is paraphyletic, and that aetosaurines represent a grade of early aetosaurs that developed into desmatosuchines and typothoracisines later in the Triassic.

The following cladogram simplified after an analysis presented by Julia B. Desojo, Martin D. Ezcurra and Edio E. Kischlat (2012).