| Marion Senior High School | |
| Address: | 848 Stage Street |
| City: | Marion |
| State: | Virginia |
| Zipcode: | 24354 |
| Country: | United States |
| District: | Smyth County School Division |
| Superintendent: | Dennis G. Carter |
| Principal: | Dr. Kelli Hughes |
| Fundingtype: | Public |
| Schooltype: | High school |
| Grades: | 9–12 |
| Mascot: | MSHS Goat |
| Colors: | Scarlet & White |
| Enrollment: | 635 (2018–19) |
| Ratio: | 12.76:1 (2018–19) |
| Teaching Staff: | 49.78 (FTE) (2018–19) |
| Athletic Conference: | Southwest District Region IV |
Marion Senior High School is a public high school located in Marion, Virginia. It is part of the Smyth County Public Schools and its athletics compete in the AA Southwest District in Region IV.