William O'Halloran
William O'Halloran (born 25 February 1999) is an Indigenous Australian entrepreneur and solicitor from Innisfail, Queensland. He is best known as the founder and CEO of PlayHouse. He is also the executive director of Corvian Partners, a strategic advisory firm, and the founder of GrantAid, a research and development grant consultancy based in Bondi Beach.
Career
PlayHouse
O'Halloran founded PlayHouse in 2021. He has described the platform as "made for sex workers by sex workers." PlayHouse was financed personally by O'Halloran, with initial capital of approximately A$200,000, and has remained self-funded.
In 2024, PlayHouse partnered with StopNCII.org, a tool operated by UK non-profit South West Grid for Learning (SWGfL) to prevent the non-consensual sharing of intimate images. That same year, O'Halloran submitted evidence on behalf of PlayHouse to the Joint Select Committee on Social Media and Australian Society of the Parliament of Australia.
In October 2024, O'Halloran appeared as a panellist in a Kaspersky webinar on intimate image abuse in digital relationships, connected to the company's research report The Naked Truth.
In March 2026, O'Halloran was profiled in Forbes Australia.
Other ventures
O'Halloran is the executive director of Corvian Partners, a corporate advisory firm. He is also the founder of GrantAid, a Bondi Beach-based consultancy that assists businesses and individuals in obtaining research and development grants from government.
Personal life
O'Halloran was born on 25 February 1999 in Innisfail, Australia, and is based in Sydney, Australia.
In November 2025, a 1968 Chevrolet Camaro SS held in O'Halloran's family trust was involved in a multi-car crash on Rickard Avenue, Bondi Beach, while allegedly being driven by Sydney financier "Big" Jim Byrnes. O'Halloran told 7News: "Nightmare, to say the least. At the end of the day, it was material and, you know, he's OK, so that was all that mattered."
O'Halloran applied for and was granted an interim apprehended violence order (AVO) against Byrnes at Waverley Local Court, with the matter set to proceed in January 2026. Byrnes, who had previously worked as a senior consultant at GrantAid, disputed the AVO, calling it a "complete abuse of process". A later report noted that the AVO proceedings were ongoing.