Gadsden High School (GHS), originally named Valley High School, is a public high school in unincorporated Doña Ana County, New Mexico, United States, with an Las Cruces postal address.

Gadsden High School serves the surrounding towns of Mesquite, Vado, Berino, La Mesa, San Miguel, Chamberino, La Union, and Anthony.

The school's name is in reference to the land acquisition known as the Gadsden Purchase.

GHS competes in the New Mexico Activities Association (NMAA), as a class 6A school in District 3.

This New Mexico school-related article is a stub.