The mission of The Cowichan Symphony Society is to advance musical enjoyment and education by providing opportunities through the presentation of concerts designed to advance, encourage and promote Canadian performers and composers, while concurrently providing assistance to student musicians and composers through local competitions and scholarships.

The geographic area served includes all of the Cowichan Valley Regional District (CVRD) on Vancouver Island, which stretches from the Malahat (just north of Victoria) to the town of Ladysmith (just south of Nanaimo), with the town of Duncan being the location of most concerts.