The Kitchener-Waterloo Symphony (KWS) is a Canadian orchestra based in the twin cities of Kitchener and Waterloo, Ontario. Its home venue is Centre In The Square in Kitchener, Ontario. The orchestra comprises 52 professional musicians under full-time contract. KWS performs close to 90 performances during a 38-week season for a combined concert audience of over 90,000. The orchestra is regularly heard across Canada on CBC Radio Two. Its current music director is Edwin Outwater, since 2007. The current executive director of the KWS is Andrew Bennett.
Glenn Kruspe founded the orchestra in 1945 to accompany the Grand Philharmonic Choir in a concert, and served as its first music director from 1945 to 1960. Frederick Pohl succeeded Kruspe and held the post from 1960 to 1970. During Pohl's tenure, the KWS Youth Orchestra was established in 1966. Raffi Armenian then became music director in 1971, and served until 1993, the longest-serving KWS music director. During Armenian's tenure, a sister ensemble to the KUW, the Canadian Chamber Ensemble (CCE), was founded, formed mainly from the principal musicians of the KWS and included flute, oboe, clarinet, bassoon, two horns, two trumpets, trombone, tuba, percussion, two violins, viola, cello and bass. The ensemble was affiliated with the Stratford Festival from 1974 to 1980, and toured throughout Canada as well as the United States Europe, and South America. The CCE was founded by conductor and was the first major Canadian ensemble to perform in Eastern Europe after the fall of the Berlin wall. The KWS' current home hall, Centre In The Square, was built during Armenian's tenure. Armenian now has title of music director laureate with the KWS.
Chosei Komatsu followed Armenian as music director from 1993 to 1999. Martin Fischer-Dieskau held the post from 2001 to 2003. His initial KWS contract had been for three years. However, on 27 November 2003, the KWS board dismissed Fischer-Dieskau from his post, ahead of the expiration of his initial contract. Fischer-Dieskau appealed for reinstatement, but the earlier dismissal was affirmed both in December 2003 and in April 2004.