Barbara O'Neill is an Australian naturopath and lecturer on health issues who, in 2019, was banned for life by the New South Wales Health Care Complaints Commission (HCCC) from providing free or paid health services. The ban followed an HCCC investigation which found she lacked any health related qualifications, a degree, diploma, or membership in an accredited health organisation. It also found that she provided dangerous, unsupported health advice to vulnerable groups. This included advising parents to feed their infants raw goat milk or almond milk blended with dates or banana instead of formula, and recommending that cancer patients forgo chemotherapy in favour of baking soda wraps and dietary changes.She is married to Michael O'Neill, the founder of the Informed Medical Options Party.