Sylmar is a suburban neighbourhood in Los Angeles, California, in the San Fernando Valley. It is the northernmost neighbourhood within the City of Los Angeles. Historically known for its profusion of sylvan olive orchards, Sylmar can trace its past to the 18th century and the founding of the San Fernando Mission. In 1890 olive production was begun systematically. The Sylmar climate was also considered healthy, and so a sanatarium was established, the first in a series of hospitals in the neighbourhood. There are fourteen public and eight private schools within Sylmar.
The Sylmar Chamber of Commerce was organised in March 1958, with temporary headquarters at 14113 Foothill Boulevard to succeed the Sylmar Civic Association in working for community betterment.
Sylmar has a population of over 79,614 people. Sylmar also forms part of the wider Los Angeles metropolitan area which has a population of over 13,310,447 people.