| DeSales Catholic High School | |
| Streetaddress: | 919 East Sumach Street |
| City: | Walla Walla |
| State: | Washington |
| Zipcode: | 99362 |
| Country: | United States |
| Coordinates: | 46.0767°N -118.3328°W |
| Religion: | Roman Catholic |
| Head Of School: | Rev. Matthew Nicks |
| Principal: | John Lesko |
| Type: | Private, Coeducational |
| Grades: | 7–12 |
| Athletics: | football, volleyball, cheer, girls basketball, boys basketball, golf, track, baseball, softball |
| Fightsong: | DeSales Fight Song |
| Accreditation: | Northwest Accreditation Commission[1] |
| Rival: | Liberty Christian |
| Mascot: | leprechaun |
| Patron: | Saint Francis DeSales |
| Team Name: | Fighting Irish |
| Yearbook: | The DeSalian |
| Established: | 1864 |
| Feeders: | Assumption Grade School |
| Free Label3: | Athletic Director |
| Free Text3: | Nick Hazeltime |
DeSales Catholic High School is a private, Roman Catholic high school in Walla Walla, Washington. It is located in the Roman Catholic Diocese of Spokane.[2]
DeSales Catholic traces its roots to two high schools, all-girls St. Vincent Academy and St. Patrick's School for Boys. St. Vincent Academy was established by the Sisters of Providence of Vancouver in 1864. St. Patrick's School for Boys was established in 1865 by the Christian Brothers. St. Patrick's was renamed LaSalle Institute in 1899. The two schools merged in 1930. The school moved to its current campus in 1959 and was renamed (Saint Francis) DeSales High School.[3]