Professor Antony Garrard Newton Flew (born 11 February 1923) is a British philosopher. Belonging to the analytic and evidentialist schools of thought, he is notable for his works on the philosophy of religion.

Flew was a strong advocate of atheism, arguing that one should presuppose atheism until evidence of a God surfaces. He has also criticised the idea of life after death,^[1] the free will defence to the problem of evil, and the meaningfulness of the concept of God.^[2] However, in 2004 he stated an allegiance to deism,^[3] and later wrote the book There is a God: How the World's Most Notorious Atheist Changed His Mind, with contributions from Roy Abraham Varghese.