Brett Joseph Sheehy AO is an Australian artistic director, producer and curator. He is currently the CEO of the Melbourne Theatre Company (MTC). He was also appointed to direct three of the five international arts festivals in Australia's State capital cities, namely: Sydney Festival, Adelaide Festival and Melbourne Festival.

Sydney Festival is a major arts festival in Australia's largest city, Sydney that runs for three weeks every January since it was established in 1977. The festival program features over 100 events from local and international artists and includes contemporary and classical music, dance, circus, drama, visual arts and artist talks. The festival attracts approximately 500,000 people to its large-scale free outdoor events and 150,000 to its ticketed events and contributes more than A$55 million to the economy of New South Wales.