Donald Winston Thompson, OC (born 18 January 1940) is a Canadian jazz musician who plays double bass, piano, and vibes. Thompson formed part of the Toronto Quartet of Paul Desmond during the mid seventies, and that effort produced two albums. Other personnel on those dates, mostly at Bourbon Street in Toronto, were Toronto guitarist Ed Bickert and drummer Jerry Fuller. Thompson has been a fixture on the Toronto jazz scene since the late 1960s when he moved there from British Columbia. Thompson played for a long time in Rob McConnell's Boss Brass.