The Coat of arms of Zacatecas was granted to the city of Zacatecas —and later adopted by the municipality and state of the same name— on June 20, 1588, by King Philip II, through a Royal Decree.

It depicts the Cerro de La Bufa, a silver cross, an image of Our Lady of Zacatecas, the Sun, the Moon and a number crowned in gold.

In its only field, there is a prominent elevation that represents the emblematic hill of La Bufa, at the foot of which the city was founded on January 20, 1548, as a result of the discovery of the rich silver mines.

On the most prominent part of the hill there is a silver cross, and in the center, an image of the Virgin Mary, since the silver mines that would later lead to the foundation of the city were discovered on September 8, 1846, the day on which the Catholic Church celebrates the birth of the Virgin Mary; below, the royal monogram of Philip II, the king who granted the coat of arms.

On the border, five bundles of arrows and interspersed with another five bows, which are the weapons used by the indigenous populations of the place.