Big Hatchet Peak, Mountain summit in Hidalgo County, New Mexico, US.

Big Hatchet Peak is the high point of the Big Hatchet Mountains, a fault-block range about 12 miles (19 km) long in the Bootheel of southeast Hidalgo County, New Mexico. Its north and west faces rise steeply above the Playas and Hachita valleys, standing about 4,000 feet above the valley floors. The range is built of Paleozoic limestone and Cretaceous shale and sandstone, and its southeastern edge lies within 3.5 miles (6 km) of the Mexican border.

The peak formed during the Paleozoic era with limestone layers that were later covered by Cretaceous shale and sandstone deposits. These ancient geological processes shaped the mountain's current structure and appearance.

The range lies mostly on Bureau of Land Management land, with no paved road access or developed recreation sites, so it sees little recreational activity. Its large relief near the Chihuahuan and Sonoran deserts creates niches more typical of mountains to the north, home to bats, raptors, bighorn sheep and javelina.

Visitors reach the summit by driving unpaved roads from Hachita followed by a hike along the South Ridge trail beginning at Thompson Canyon. The terrain is rugged and the area remote, so come prepared for desert conditions and bring adequate water.

The range's southeastern edge lies within 3.5 miles (6 km) of the Mexican border, and the whole range runs about 12 miles (19 km) northwest to southeast. Most of the smaller summits are unnamed; the exceptions are Zeller Peak, two miles north, and New Well Peak at 6,284 feet (1,915 m), which anchors the southeast end.