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Tagaytay City Science National High School is a public Science High School in Sungay West, Tagaytay City, Cavite of Calabarzon (Region IV-A). It teaches students in grades 7-12. The school is structured as a science school, which means it operates under the Department of Science and Technology and offers advanced Science and Math courses. Magdaleno R. Lubigan is in charge of the school, acting as the School Principal.

The school has at least one canteen, clinic, computer laboratory, general academic classroom, home economics, music room, theater room, arts room, dance room, science laboratory, library and office. Of the instructional rooms, all of them are standard rooms, meaning they meet the DepEd's guidelines for safety and usability.

Former Mayor Francis N. Tolentino initiated the establishment of the Tagaytay City Science National High School (TCSNHS) in June 1987. The school started with six modest classroom until it gradually expanded with additional classroom to cater to the increasing number of students. Soon, additional facilities were built. Now, the TCSNHS has advanced to its goal and has remained to be one of the best learning institutions in Tagaytay City.