Tecate Peak, Mountain summit in San Diego County, US.

Tecate Peak is a mountain in San Diego County, California, 4 miles (6.4 km) west of the twin towns of Tecate, California, and Tecate, Baja California, and about half a mile (800 m) north of the Mexico–United States border. Its broad lower slopes narrow to a pointed summit, and lower, darker hills stand in front of it.

The peak has served as a border marker between the United States and Mexico since the international boundary was established in this region. This role makes the mountain historically important to the border area.

The Kumeyaay call the peak Kuuchamaa, also spelled Kuchamaa, Cuchuma or Cuchama, and regard it as a sacred mountain. In 2020s the mountain has been partially destroyed by the US government to expand the border wall, despite protests from Kumeyaay people and Mexicans.

The summit is accessible via maintained hiking trails that start from a designated parking area and lead to the top. It is important to prepare for changing weather conditions and challenging terrain.

The mountain hosts communication towers and border patrol facilities that are actively used for monitoring the border. These modern structures contrast with the mountain's long history as a spiritual place.