Anthony Venn-Brown OAM (born 13 March 1951) is a former Australian evangelist in the Assemblies of God now (Australian Christian Churches) and an author whose book, A Life of Unlearning describes his experience in Australia's first ex-gay program. He is also the Co-founder and previous Convenor of Freedom 2b which is a network for GLBTIQ (Gay, Lesbian, Bisexual, Transgender, Intersex and Queer) people from Evangelical backgrounds. He is also the founder and CEO of Ambassadors & Bridge Builders International (ABBI).