Colleen Anne O'Reilly AM (born 1949) is an Australian Anglican priest, who was made a Member of the Order of Australia in 2021, in recognition of her significant service to the Anglican Church of Australia, and to religious education. O'Reilly has been a strong advocate for women's leadership in the Anglican Church and women's ordination since the 1970s and described by Muriel Porter as "the ‘mother' of the movement that was a key factor in bringing about the ordination of women through many years of determined struggle".