| Southeast High School | |
| Location: | 5401 South Shields Boulevard |
| City: | Oklahoma City |
| State: | Oklahoma |
| County: | United States |
| Zipcode: | 73129 |
| Country: | United States |
| Principal: | Scott Farley |
| Type: | Co-Educational, Public, Secondary |
| Grades: | 9–12 |
| Fightsong: | Ole Southeast High! |
| Rival: | U. S. Grant High School & Capitol Hill High School |
| Mascot: | Spartan |
| Team Name: | Spartans |
| Colors: | Blue White Black |
| Established: | 1949 |
| Staff: | 50.40 (FTE) |
| Ratio: | 18.94 |
| Enrollment: | 854 (2022-23)[1] |
| Homepage: | Southeast High Spartans |
Southeast High School is a high school in Oklahoma City, Oklahoma that opened in 1950. The school closed in 1990 but was reopened and remodeled in 1994 as a magnet school with an emphasis on four new technology programs. Being a magnet school, students must fill out an application and be admitted to the school, regardless of the school district in which they reside.
When the school reopened in 1994, it was still undergoing renovations. Shortly after classes started, it became apparent that it would be necessary to choose an alternate site for students until the construction was complete. The students enrolled at Southeast spent their first semester at the school in makeshift classrooms at the Federal Aviation Administration building in OKC.