Harry Denman was a noted Methodism lay leader and evangelist within the Methodist Church who emphasized the life taught by Jesus at the Sermon on the Mount. Denman strongly challenged modern materialism and prejudice by exemplifying and teaching a simple life, and by personally relating to all people, regardless of race, gender, or economic means. His personal property was very limited; for example he usually had only one pair of shoes and refused to wear a watch, preferring to ask for the time as a way of starting a conversation. Articles that were given to him were generally given away to the needy. He was a close friend of another well-known evangelist, Billy Graham who called Denman "one of the great mentors for evangelism."
He was born September 26, 1893 in Birmingham, Alabama of Hattie Leonard and William Harry Denman, who immigrated from Gloucestershire, England. He earned a bachelor's degree from Birmingham-Southern College in 1921, and a master's degree in social work in 1930. In 1936 he received an honorary doctorate from Athens State University in Alabama. In 1915, Denman became secretary of the Birmingham Sunday School Association, a post which he held until 1919, when he became church manager of the First Methodist Church in Birmingham.