Gemma O'Neill
Gemma O'Neill is Jackie Henderson's long-time manager and friend, known for her unwavering support during Jackie’s struggles with addiction. O'Neill played a crucial role in encouraging Henderson to seek help, particularly when she recognized the severity of her friend’s situation. As a seasoned broadcast executive, she has navigated the complexities of the entertainment industry while maintaining a close personal relationship with Henderson.
Not in the pool (under ¢1).
Recent news mentions
Henderson said, in a statement via her manager Gemma O’Neill, that she was deeply saddened by the events of the past week.
Henderson disputes radio show departure, seeks legal advice
Australia· 2026-03-06
Jackie O Henderson's manager, Gemma O’Neill, has been contacted for comment.
Kyle Sandilands and ARN may face ugly legal stoush after Jackie O departure from showAustralia· 2026-03-05
Gemma O’Neill is Jackie Henderson's best friend and manager, co-hosting the podcast 'Her Best Life' with her.
Why Jackie O decided it was time for a change, and what comes nextAustralia· 2026-03-04
Gemma O'Neill is Jackie Henderson's manager who noticed her behavioral changes and encouraged her to seek help.
The radio star reveals she is a recovering addictAustralia· 2026-03-03
