| Lord Tweedsmuir Secondary | |
| Address: | 6151 180 St |
| Country: | Canada |
| Type: | Public high school |
| School Number: | 3636041 |
| Principal: | Mr. Ken Hignel |
| Staff: | approx. 123 |
| Grades: | 8-12 |
| Enrolment: | 1800 |
| Enrolment As Of: | September 2023 |
| Classes: | 359 |
| Schedule Type: | 4 Block Schedules |
| Schedule: | Semester System |
| Colours: | Green and black |
| Mascot: | Panther |
| Medium Of Language: | English, French, Spanish |
| Picture Caption: | View of school along 180 St. |
Lord Tweedsmuir Secondary is a public high school in the city of Surrey, British Columbia, Canada and is part of School District 36 Surrey. In September 1993, staff and students from Cloverdale Junior Secondary and Lord Tweedsmuir Senior Secondary joined together to form Lord Tweedsmuir Secondary, and moved into the new building. Lord Tweedsmuir's name has been attached to a school in the Cloverdale area since 1940 when Canada's Governor General, John Buchan, Lord Tweedsmuir of Elsfield died.
The school's mascot is the Panther. The school is sport rivals with the other nearby secondary schools, École Salish Secondary School and Clayton Heights Secondary School. The average class size is 23.5 students.
Lord Tweedsmuir Secondary School offers many programs to its students and teachers.