| Roncalli High School | |
| Latin Name: | Roncalli |
| Streetaddress: | 1400 North Dakota Street |
| City: | Aberdeen, South Dakota |
| County: | (Brown County) |
| Zipcode: | 57401 |
| Country: | USA |
| Coordinates: | 45.4794°N -98.4731°W |
| Pushpin Map: | South Dakota#USA |
| Religion: | Roman Catholic |
| President: | Tim Weisz |
| Principal: | Paula Florey |
| Gender: | All Genders |
| Type: | Private, Coeducational |
| Grades: | 9–12 |
| Hours In Day: | 8–3 |
| Athletics Conference: | Northeast Conference |
| Motto: | "Instilling Catholic values and promoting academic excellence by nurturing mind, body and soul" |
| Accreditation: | North Central Association of Colleges and Schools[1] |
| Rival: | Groton Tigers |
| Mascot: | Cavalier |
| Team Name: | Cavaliers |
| Colors: | Green and gold |
| Yearbook: | Lance |
| Newspaper: | Cavalcade |
| Established: | 1964 |
Roncalli High School is a private, Roman Catholic high school in Aberdeen, South Dakota. It is located in the Roman Catholic Diocese of Sioux Falls.
Roncalli High School is named after Pope John XXIII, born Angelo Giuseppe Roncalli.
Roncalli is a member of the South Dakota High School Activities Association. They have won the following SDHSAA State Championships:[2]
Dacotah Bank Stadium is the home venue for all Roncalli football games.