Hoazinoides is an extinct genus of birds from the Middle Miocene (Laventan) from the "Monkey Beds" of the Villavieja Formation of the Honda Group at the Konzentrat-Lagerstätte of La Venta, Colombia.

It is a member of the family Opisthocomidae, which also includes the hoatzin and several other extinct genera.

Like many other fossil birds, it is known from fragmentary remains, including the back portion of the skull, the specimen UCMP 42823[1] and other bones of the extremities.

From these remains it appears that this bird was similar to that of hoatzin, although smaller, and distinguished from it in the parietal wall of the skull is concave and the coracoid and sternum were not fused.

Additionally, the remains of its distal ulna and carpal-metacarpal suggest that its arms were similar to those of hoatzins.