The governor of New Mexico is the head of government of New Mexico. The governor is the head of the executive branch of New Mexico's state government and the commander-in-chief of the New Mexico National Guard. As noted in the governor's seal, this gubernatorial office is a scion of the Spanish and Mexican governors of Nuevo México (1598) and the governors of the New Mexico Territory (1851). The officeholder is afforded the courtesy title of The Honorable for life. The current governor is Michelle Lujan Grisham, a Democrat, who was sworn in as the 32nd governor of New Mexico on January 1, 2019.

The New Mexico National Guard is the militia of the U.S. state of New Mexico. Comprising the New Mexico Army National Guard and the New Mexico Air National Guard, it is part of the National Guard of the United States, a reserve force under both state and federal jurisdiction.