HEART Party

Health, Environment, Accountability, Rights, Transparency (HEART) is a minor Australian political party registered federally and in New South Wales. The party supports alternative medicine, COVID-19 scepticism, climate change scepticism, and opposes mandatory vaccination and water fluoridation. The party's rhetoric has often been described as unscientific by authorities, who have stated the party spreads misinformation.

The party was founded as the Involuntary Medication Objectors (Vaccination/Fluoride) Party, before later renaming to the Informed Medical Options Party (IMOP). The party's leader is Michael O'Neill, husband of barred alternative medicine promoter Barbara O'Neill. Rebecca McCredie is its deputy registered officer.

In August 2023, IMOP attempted to merge with the Health Australia Party (HAP) to become HEART, with HAP subsequently backing out from the merger and later dissolving. HEART was previously registered in Queensland, but voluntarily deregistered on 9 February 2024. The party was also previously deregistered at the federal level between August 2024 and February 2025, as it failed to demonstrate required minimum membership at the time.