I am a Catholic catechist, speaker, and writer living in Birmingham, Alabama. I also host the EWTN Radio Program Called to Communion. I grew up in the Presbyterian Church (PCA) and attended a Protestant college and seminary. During my Ph.D. studies in Reformation History, I became persuaded of the truth of the Catholic Faith. (Read about it here.) I entered the Church in 2003, along with my wonderful wife, Jill, and my (now) five children. I speak at conferences, parishes, debates, and other venues.

Troy Guy converted to the Catholic Church after being an anti-Catholic Baptist for over 25 years. His ministry helps Catholics defend their faith against ongoing attacks from both secular culture and anti-Catholic fundamentalists. His book, Evangelical Catholic, which received the Imprimatur by Cardinal Daniel DiNardo, describes his experience discovering the Catholic faith and presents the indisputable Biblical and historical evidence that led him to convert. As a nationally recognized speaker on Catholic apologetics, Troy has appeared on EWTN TV, The Journey Home Show, and is a frequent guest on Catholic radio programs.

Currently, he is a Principle Engineer for a spacecraft designed to conduct human missions to the Moon. He began his career in nuclear science, performing high energy atomic experiments for the Department of Defense and Department of Energy. Troy is a graduate of Texas A&M University. He holds degrees in Electrical Engineering, Nuclear Engineering, and Physics. He is a pilot and flight instructor for multi-engine aircraft. Troy and his wife, Lisa, have four children and live in Texas.