Cagayan National High School

Infobox Secondary School
name = Cagayan National High School

established = 1905
type = Public National High School
principal = Linda P. Tungcul, Ph.D
grades = VII – X
address = Taft Street
city = Tuguegarao City, Cagayan
country = Philippines
newspaper = "The Chronicle", "Ang Bagwis"

Cagayan National High School is the Cagayan Province's Public National High School. It is located at Taft Street, Tuguegarao City, Cagayan. Established in 1905, it is the oldest public secondary level school in the Cagayan Province.

The school, which is administered by the Department of Education, has around 7,000 students. Its campus is fenced and gated, although some of the buildings outside the walls of the school are being used because of the great number of students.

Cagayan National High School, like standard Public National High Schools in the Philippines, section their students according to the entrance exam scores taken before the students' first year. There are three different curricula. The Restructured Basic Education Curriculum (RBEC) is for majority of the students. The Engineering and Science Education Program-Special Science Classes (SSC-ESEP) is for the top 150 students in their batch, whose sections are named Gold, Silver, and Nickel after the elements. The other curriculum is for those who applied for the Special Program for the Arts, which centers on nurturing talents of the students.