San Pedro del Gallo is a municipality in the Mexican state of Durango. The municipal seat lies at San Pedro del Gallo. The municipality covers an area of 2,008.3 km<sup>2</sup>.
As of 2010, the municipality had a total population of 1,709, up from 1,486 as of 2005.
The municipality had 73 localities, none of which had a population over 1,000.