| Routt Catholic High School | |
| Streetaddress: | 500 East College Avenue |
| City: | Jacksonville |
| State: | Illinois |
| Zipcode: | 62650 |
| Country: | USA |
| Coordinates: | 39.7329°N -90.2223°W |
| Denomination: | Roman Catholic |
| Oversight: | Diocese of Springfield |
| Principal: | Dan Carie |
| Faculty: | 25 FTE |
| Avg Class Size: | 12 |
| Ratio: | 9:1 |
| Act: | 28 |
| Type: | private |
| Gender: | coed |
| Fees: | $250 |
| Tuition: | $4,650 |
| Grades: | 9–12 |
| Campus Size: | Small |
| Campus Type: | School |
| Athletics: | All |
| Conference: | Western Illinois Valley |
| Slogan: | Enter to Grow, Leave to Serve |
| Accreditation: | North Central Association of Colleges and Schools[1] |
| Mascot: | Rockets |
| Team Name: | Rockets |
| Established: | 1902 |
| Enrollment: | 132 |
| Enrollment As Of: | 2023 |
| Homepage: | routtcatholic.com |
Routt Catholic High School is a private Roman Catholic high school in Jacksonville, Illinois. It is affiliated under the Roman Catholic Diocese of Springfield, Illinois.
Routt High School was founded in 1902 through the inspiration of Rev. Dean John W. Crowe, the encouragement of Fr. Francis Formaz and the generosity of the Routt family. Routt continues to provide an education for students of all faiths, with more than 40 percent of its students self-identifying as non-Catholic .