Frank Brennan is a Jesuit priest, professor of law at Australian Catholic University and Adjunct Professor at the Australian National University College of Law and National Centre for Indigenous Studies. He was the founding director of Uniya, the Australian Jesuit Social Justice Centre. He is a board member of St Vincents Health Australia.
He is an Officer of the Order of Australia (AO) for services to Aboriginal Australians, particularly as an advocate in the areas of law, social justice and reconciliation. The National Trust classified him as a Living National Treasure at the same time that Paul Keating labelled him "the meddling priest". In 2009, he chaired the Australian National Human Rights Consultation Committee.