Hard-Ons are an Australian punk rock band formed in 1981 in Sydney. They originally played punk rock, but as the years passed the band moved more into a pop punk sound. They are widely regarded as one of Australia's first and most influential punk bands. The three current members of Hard-Ons are Ray Ahn (bass),Peter "Blackie" Black (guitar/vocals) and Keish de Silva (drums).

The band have been proactively releasing new music in various styles since 1981. They have released more than 10 studio albums and numerous EPs and compilations. Hard-Ons have also performed extensively across Australia, as well as in Europe, Asia and the US. They have played shows with bands like The Offspring, NOFX, Green Day, and Social Distortion.

Hard-Ons have won multiple ARIA awards over the years and were inducted to the Australian Recording Industry Association (ARIA