Castle Hill convict rebellion

The Castle Hill convict rebellion was a convict rebellion in Castle Hill, Sydney, then part of the British colony of New South Wales. Led by veterans of the Irish Rebellion of 1798, the poorly armed insurgents confronted the colonial forces of Australia on 5 March 1804 at Rouse Hill. Their rout in the resulting skirmish was hailed by as loyalists as "Australia's Vinegar Hill" after the 1798 battle of Vinegar Hill, where Society of United Irishmen rebels were decisively defeated. The incident was the first major convict uprising in Australian history to be suppressed under martial law.

On 4 March 1804, 233 convicts, led by Philip Cunningham, a veteran of the Irish Rebellion of 1798 as well as a mutineer on the convict transport Anne, escaped from a prison farm, intent on "capturing ships to sail to Ireland". In response, martial law was quickly declared in the colony. The mostly Irish rebels, having gathered reinforcements, were pursued by colonial forces under George Johnston until they were caught on Rouse Hill on 5 March 1804.

While negotiating under a flag of truce, Cunningham was arrested. Johnston's troops then charged and scattered the rebels, and the rebellion was suppressed. Nine of the rebel leaders were executed, and hundreds were punished, before martial law was revoked a week after the battle.