| Cowichan Senior Secondary School | |
| Address | |
| 2652 James St Duncan, British Columbia, V9L 2X2, Canada |
|
| Information | |
| School number | 7965009 |
| School board | School District 79 Cowichan Valley |
| Principal | Charlie Coleman |
| Vice principal | Judy Hershman, Sian Peterson |
| Staff | 62 |
| School type | Public high school |
| Grades | 10-12 |
| Area | Cowichan Valley |
| Mascot | Thunderbird |
| Team name | Thunderbirds |
| Colours | Burgundy, White, and Black |
| Enrolment | 950 (February 2, 2011) |
Cowichan Secondary is a public high school in Duncan, British Columbia part of School District 79 Cowichan Valley.