| Barretto National High School | |
| Location: | Rizal Street |
| Streetaddress: | Barrio Barretto |
| Region: | III |
| City: | Olongapo City |
| Province: | Zambales |
| County: | Philippines |
| Postcode: | 2200 |
| Country: | Philippines |
| Coordinates: | 14.8564°N 120.2706°W |
| Type: | Public |
| Grades: | 7 to 12 |
Barretto National High School, formerly known as Barragay High School then changed to Barretto High School, is a school in Barrangay Barretto, Olongapo City, Province of Zambales, Philippines. It is located at Rizal Street.