Frank Tenison Brennan SJ AO (born 6 March 1954) is an Australian Jesuit priest, human rights lawyer and academic. He is known for his 1998 involvement in the Wik debate when Paul Keating called him "the meddling priest" and the National Trust classified him as a Living National Treasure. Brennan has a longstanding reputation of advocacy in the areas of law, social justice, refugee protection, Aboriginal reconciliation and human rights activism.