| Linn High School | |
| Superintendent: | Dena Smith |
| Type: | Public High School |
| Campus Type: | Rural |
| Act: | 19.4 |
| Act Year: | 2018 |
| District: | Osage County R-II School District |
| Grades: | 6–12 |
| Principal: | Jeff Jacques |
| Teaching Staff: | 26.88 (FTE) |
| Ratio: | 13.02 |
| Students: | 350 (2022–2023)[1] |
| Colors: | Red and White |
| Mascot: | Wildcat |
| Rival: | Fatima High School |
| Conference: | Show-Me Conference |
| Feeder Schools: | Osage County Elementary, Linn Middle |
| Location: | 1212 E Main St, Linn, MO 65051 |
Linn High School is the only high school in Osage County R-II School District in Linn, Missouri. It is one of three high schools in Osage County, the other two being Chamois High School and Fatima High School.
Linn High School is majority white at 97%. The average ACT is 19.4, slightly lower than the Missouri average of 20.8. The student to teacher ratio is 13:1.[2] 32% of the student body is economically disadvantaged. The high school is currently unranked in national and state rankings.[3]