Frank Davis Hammond (1921-2005) was an American author known for his writings on Christian deliverance ministry. He founded the Children's Bread Ministry in 1980 with his wife, Ida Mae Hammond, who often collaborated on his works. Hammond's theological education included studies at Baylor University and Southwestern Baptist Theological Seminary.

His teachings emphasized that various personal struggles, including ethical failings like resentment and gossip, as well as compulsive behaviors, emotional difficulties, and mental health issues, could be attributed to demonic influence requiring deliverance. Hammond and his wife were recognized as highly influential figures in this field. Their 1973 book, "Pigs in the Parlor: A Practical Guide to Deliverance," became a seminal text, selling over a million copies and significantly impacting the Catholic Charismatic Renewal by introducing concepts of demonic influence beyond full possession.

Frank Davis Hammond's theological framework posited that a range of human difficulties, from ethical lapses such as resentment and gossip to compulsive behaviors like overeating, memory problems, sexual struggles, and mental illness, could stem from demonic forces. He advocated for deliverance ministry as a means to address these issues. Alongside his wife, Ida Mae, they were considered paramount figures in the practice of deliverance. Their influential 1973 book, "Pigs in the Parlor: A Practical Guide to Deliverance," became a cornerstone text in the field, achieving widespread readership and sales exceeding one million copies. Hammond's writings played a crucial role in disseminating the principles of deliverance ministry within the Catholic Charismatic Renewal, particularly highlighting the notion of demonic influence that fell short of the complete demonic possession requiring formal exorcism by a priest.

Hammond's work extended beyond theoretical discussions, aiming to provide practical guidance for individuals and the broader Christian community. The establishment of the Children's Bread Ministry in 1980, co-founded with his wife Ida Mae, represented a concrete manifestation of their commitment to spiritual well-being and deliverance. This ministry likely served as a platform for their teachings and outreach. The significant success and influence of "Pigs in the Parlor" underscore the demand for and impact of their approach to spiritual warfare and personal freedom within a Christian context. By bridging concepts of deliverance with established Christian movements like the Catholic Charismatic Renewal, Hammond helped shape contemporary understanding of spiritual challenges and their resolution.