| La Salle Secondary School, Kota Kinabalu | |
| Motto: | Fides et Opera (By Faith and Deeds) |
| Established: | 1953 |
| Other Name: | SMLS |
| Type: | National Secondary School |
| Affiliation: | La Sallian Educational Institutions |
| Grades: | Form 1 to Form 5 and Pre-U (Lower and Upper 6) |
| Classrooms: | Vega, Rigel, Capella, Procyon, Agena |
| Principal: | Mr. Vijayakumar Arumugam |
| Students: | Roughly 1,070 students |
| Colours: | Azure, maroon, red, yellow |
| Free Label: | Yearbook |
| Free Text: | La Sallian |
| Location: | Murni Road, Tanjung Aru, Kota Kinabalu, Sabah |
| Country: | Malaysia |
| Coordinates: | 5.953°N 116.0523°W |
La Salle Secondary School, Kota Kinabalu (Malay: Sekolah Menengah La Salle Kota Kinabalu) is a co-educational secondary school for boys and girls (mostly boys) and one of the oldest schools in Kota Kinabalu on the coast of Borneo in East Malaysia.
It was established in 1953 by Rev. Fr. Bernard Davies, a Mill Hill Missionary. Despite being an all-boys mission school, the students consist of all races regardless of religion.
The school is divided into two pieces of land. The Senior Block (Forms 4 to 6), remains at its current location. The Junior Block (Forms 1 to 3) has been relocated to the new ground to accommodate the increase in student enrolment.
The single-session secondary school is located in Tanjung Aru. It is a few minutes walk from Pekan Tanjung Aru. Next to the Senior Block is SM Stella Maris.
La Salle Secondary School Kota Kinabalu was established in July 1903 as Sacred Heart Primary School by Father Van Der Heyden. By June 1913, the school had around 50 students which increased to 215 by the year 1923. Between 1941 and 1945, a wooden school building with eight classes was built on the site where the current Sacred Heart Primary School stands.[1]
In the early 1950s, the Catholic Mission started the Sacred Heart secondary school and Father Bernard Davies who served as its first principal. In 1953, the Catholic Mission obtained 3 hectares of land in Tanjung Aru and moved the school to its present location.[1]
By 1958, the La Salle Brothers took over the management of the school with Brother Raphael Egan being the first principal. On 22 May 1958, Sacred Heart Secondary School was subsequently renamed La Salle Secondary School. This name was derived from the founder, Jean Baptiste de La Salle.
The school is affiliated to other Lasallian educational institutions in Malaysia.