"Great Wall" is a song by Australian rock band Boom Crash Opera. It was the first single from their self-titled 1987 album, and reached number five on the Australian music charts. Great Wall's lyrics reference the New South Wales Hume Weir (Dam).
At the 1986 Countdown Australian Music Awards the song won Best Debut single.
Jane Gazzo said, "Featuring a 'hey hey' catch cry coupled with bombastic beats and a chugging bassline, it was a superb single to release as a debut."