| Conneaut High School | |
| Streetaddress: | 381 Mill Street |
| City: | Conneaut |
| State: | Ohio |
| County: | (Ashtabula County) |
| Zipcode: | 44030 |
| Country: | USA |
| Coordinates: | 41.9472°N -80.5608°W |
| Superintendent: | Lori Riley |
| Principal: | Stephanie Anservitz |
| Teaching Staff: | 22.25 (FTE) |
| Ratio: | 18.16 |
| Type: | Public, Coeducational |
| Grades: | 9-12 |
| Conference: | Northeastern Conference |
| Team Name: | Spartans[1] |
| Enrollment: | 404 (2018–19)[2] |
| Homepage: | https://www.cacsk12.org/ |
Conneaut High School is a public high school in Conneaut, Ohio in the United States. It is the only high school in the Conneaut Area City Schools district which is located in the northeasternmost corner of Ohio. The Conneaut High School mascot is the Spartan. Conneaut High School is in the Northeastern Conference and is classified as a Division-2 school for most sports.