| St. Frederick High School | |
| Streetaddress: | 3300 Westminster Avenue |
| City: | Monroe |
| State: | Louisiana |
| County: | (Ouachita Parish) |
| Zipcode: | 71201 |
| Country: | USA |
| Coordinates: | 32.5367°N -92.0889°W |
| Religion: | Roman Catholic |
| Principal: | Carynn Wiggins |
| Gender: | Coeducational |
| Type: | Private |
| Grades: | 7–12 |
| Language: | English |
| Hours In Day: | 8 |
| Accreditation: | Southern Association of Colleges and Schools[1] |
| Rival: | Ouachita Christian High School |
| Mascot: | Warrior |
| Sports: | Football, Baseball, Softball, Basketball, Soccer, Swimming, Golf, Tennis, Track/Field, Cross Country |
| Team Name: | Warriors |
| Colors: | Royal Blue, white, and black |
| Established: | 1964 |
| Homepage: | www.stfrederickhigh.org |
St. Frederick High School is a private, Catholic high school in Monroe, Louisiana. The school was established in 1964 by the Daughters of the Cross and named in honor of Rae Frederick Rinehart Jr., whose family donated the land the school is located on.[2]
Today, St. Frederick is a college prep school serving grades 7–12.
St. Frederick High athletics competes in the LHSAA.