Piendamó is a municipality in the department of Cauca in southwestern Colombia.

The town of Piendamó was founded by Pedro Antonio Sandoval on April 2, 1525.

Piendamó was formerly called Tunía and as such an encomienda of the conquistadors Sebastian de Belalcázar, Francisco Arévalo, Pedro Matta and Pedro de Velasco.

At the beginning of 1924 the first locomotives arrived in this town and with them a large number of merchants, immigrants and settlers from the department of Valle del Cauca and the coffee region.

It borders Silvia in the east, Morales in the west, Caldono in the north and Cajibio in the south.