Acromyrmex balzani is a species of leaf-cutter ant of the subfamily Myrmicinae.

It is found Argentina, Paraguay, and Brazil.

[1] It occurs in Cerrado[1][2] and semideciduous seasonal forest.

[2] In addition to the nominotypical subspecies, one subspecies is recognized:[3] A colony of Acromyrmex balzani consists of several subnests (i.e, polydomy), with one queen each.

The underground nests contain 1–14 fungus chambers and can reach a depth of at least 160 cm (63.0 in).