Engenheiro Caldas is a municipality in the state of Minas Gerais, in the Southeast region of Brazil. It is one of the many municipalities that make up Minas Gerais, Brazil's fourth-largest state by area and its second most populous.
The municipality is located in southeastern Brazil, within the country's Southeast region, which also includes the states of São Paulo, Rio de Janeiro, and Espírito Santo. As a municipality, Engenheiro Caldas forms a single administrative unit with its surrounding area, a structure common to local government throughout Brazil.