Campo Grande is a locality in Misiones Province, Argentina, and serves as the administrative head of the Cainguás department. It is situated in the interior of the province, within the region known for its subtropical climate and rolling terrain.
The town borders several other municipalities across different departments. Within Cainguás it borders Aristóbulo del Valle. It also shares boundaries with Ruiz de Montoya in the Libertador General San Martín department, Jardín América in the San Ignacio department, Campo Viera and Campo Ramón in the Oberá department, and 25 de Mayo and Alba Posse in the 25 de Mayo department.
As the head of its department, Campo Grande functions as a local administrative center for the surrounding area. Its position among these neighboring municipalities places it within a network of towns in central and eastern Misiones.