Máximo Benito Santos Barbosa[1] (15 April 1847 – 19 May 1889) was a Uruguayan political and military figure.

In 1882 Miguel Alberto Flangini Ximénez, who served briefly as acting President of Uruguay, stepped down from office.

Santos was succeeded as president by his Colorado Party colleague Máximo Tajes, with whom, however, he had poor relations.

Subsequent to the relinquishing of his presidential office for the second time, Santos travelled in Europe, and was unable to return to Uruguay.

His country estate now houses the Museo de la Memoria, a state-owned museum dedicated to the victims of the Uruguayan dictatorship.