Stuart David Challender was an Australian conductor, known particularly for his work with The Australian Opera, Elizabethan Sydney Orchestra and the Sydney Symphony Orchestra.

The Sydney Symphony Orchestra (SSO) is an Australian symphony orchestra based in Sydney. Initially formed in 1908, the orchestra has performed at the Sydney Opera House as its home concert hall, since the venue's opening in 1973. Simone Young is the orchestra's chief conductor and the first female conductor in the post.