| Fairfield Union High School | |
| Streetaddress: | 6675 Cincinnati-Zanesville Road NE |
| City: | Lancaster |
| State: | Ohio |
| County: | (Fairfield County) |
| Zipcode: | 43130 |
| Country: | United States |
| Coordinates: | 39.7544°N -82.4728°W |
| District: | Fairfield Union Local School District |
| Superintendent: | Chad Belville |
| Principal: | Matt McPhail |
| Faculty: | 48 |
| Type: | Public, Coeducational high school |
| Grades: | 9-12 |
| Campus Size: | 134acres |
| Conference: | Mid-State League |
| Team Name: | Falcons |
| Colors: | Red, black and white |
| Rivals: | Bloom Carroll Bulldogs and Amanda Clearcreek Aces |
| Established: | 1962 |
| Enrollment: | 645 (2016-17)[1] |
| Homepage: | https://www.fairfieldunion.org/fairfieldunionhighschool_home.aspx |
Fairfield Union High School is a public high school in Richland Township, Fairfield County, Ohio, located just west of the village of West Rushville, with an enrollment of 645 students.[2] Fairfield Union High School is the only high school in the Fairfield Union Local Schools district, which consolidates three communities: Bremen, Pleasantville, and Rushville. The school's sports teams are known as the Falcons.[3]