George Barna is an American researcher and author known for his work in the field of Christian research and sociology. He founded the Barna Group, a marketing research firm that focuses on the intersection of faith and culture, providing insights into the beliefs and behaviors of American Christians. Barna has written numerous books and articles, contributing to discussions on religion, spirituality, and leadership. His research often explores trends in church attendance, faith practices, and the impact of religion on society, making him a prominent figure in understanding the dynamics of faith in contemporary America.