| Triton Regional High School | |
| Streetaddress: | 112 Elm Street |
| City: | Byfield |
| State: | Massachusetts |
| Zipcode: | 01922 |
| Country: | United States |
| Coordinates: | 42.7447°N -70.9192°W |
| Ratio: | 11.12 |
| Teaching Staff: | 58.19 (FTE) |
| District: | Triton Regional School District |
| Principal: | Patrick Kelly |
| Type: | Public high school |
| Grades: | 9–12 |
| Conference: | Cape Ann League |
| Accreditation: | NEASC |
| Mascot: | Vikings |
| Colors: | Navy Blue, Columbia blue and white |
| Newspaper: | Triton Voice |
| Established: | 1971 |
| Enrollment: | 647 (2022-23)[1] |
Triton Regional High School is a public high school in the village of Byfield within the town of Newbury, Massachusetts. Triton High also serves the nearby towns of Rowley and Salisbury.
Home of the Vikings, Triton Regional High School teams sport the colors of blue and white, and compete within the Cape Ann League. The school has a co-op athletic partnership for swimming and track and field with Georgetown High School.