Harlingen High School is a public high school located in Harlingen, Texas, United States.

It is part of the Harlingen Consolidated Independent School District and was the first of five HCISD high schools established.

[2] The Cardinals are known for their successful football, dance and band programs.

The football program has the second most wins of any school south of San Antonio and also has the most playoff appearances of any valley school.

The Cardinal football program holds 37 district championships, the most in South Texas.