Guanábano is a barrio in the municipality of Aguada, Puerto Rico.

[3][4][5] Guanábano was in Spain's gazetteers[6] until Puerto Rico was ceded by Spain in the aftermath of the Spanish–American War under the terms of the Treaty of Paris of 1898 and became an unincorporated territory of the United States.

In 1899, the United States Department of War conducted a census of Puerto Rico finding that the combined population of Guanábano (spelled Guanábanas) and Mal Paso barrios was 723.

[7] Puente de Coloso, a bridge used during the height of sugarcane production in Puerto Rico, is located in Guanábano over the Culebrinas River.

Barrios (which are, in contemporary times, roughly comparable to minor civil divisions)[14] in turn are further subdivided into smaller local populated place areas/units called sectores (sectors in English).