St. Justin Martyr Catholic Church is a vibrant and welcoming community located in the heart of Key Largo, Florida. Our parish is dedicated to living out the Gospel message of Jesus Christ and serving our local community. With a rich history and a commitment to faith, service, and fellowship, St. Justin Martyr Catholic Church is a place where all are welcome to come and grow in their relationship with God and one another. Whether you are a long-time parishioner, visitor, or new to the area, we invite you to join us for Mass, prayer, and community events as we journey together in faith.