| Great Plains Lutheran High School | |
| Established: | 1996 [1] |
| Grades: | 9-12 |
| President: | David Maertz |
| Principal: | Matt Bauer |
| Dean: | Karl Schauland |
| Faculty: | 13 |
| Staff: | 10 |
| Enrollment: | 131 |
| Conference: | Eastern Coteau (ECC) |
| Colors: | Navy blue and white |
| Mascot: | Panthers |
| Free Label: | Varsity Sports |
| Free Text: | Girls - 5 & Boys - 5 |
| Free Label2: | School Song |
| Free Text2: | Wave the Flag |
| Location: | 1200 Luther Lane NE Watertown, SD 57201-8200 |
| Coordinates: | 44.9161°N -97.1058°W |
| Homepage: | www.gplhs.org |
Great Plains Lutheran High School (GPLHS) is a high school in Watertown, South Dakota, United States. It is the only private high school in Watertown. GPLHS is owned and operated by 48 congregations belonging to the Wisconsin Evangelical Lutheran Synod (WELS).[2]