| All Saints Catholic Secondary School | |
| Address: | 3001 Country Lane |
| Province: | Ontario |
| Country: | Canada |
| Coordinates: | 43.895°N -78.9656°W |
| Founded: | 2001 |
| Superintendent: | Gerry O'Reily |
| Trustee: | Mary Ann Martin Scott Murdock |
| Number: | 685984 |
| Principal: | Dan Allen |
| Grades: | 7–12 |
| Enrolment: | 1,055[1] |
| Enrolment As Of: | 2019/2020 |
| Colours: | Maroon, silver, and blue |
| Mascot: | Titan |
All Saints Catholic Secondary School is a secondary school located in Whitby, Ontario, Canada open for students in grades 7–12. It offers a broad range of academic programs including Ontario Youth Apprenticeship Program (OYAP), Cooperative Education (Co-Op), Specialist High Skills Major (SHSM), Advanced Placement (AP), Head Start, Centre for Success/Reconnect, and Electronic learning.[2] It is adjacent to Donald A Wilson Secondary School.