Charles Sherlock Fillmore was an American religious leader who founded Unity, a church within the New Thought movement, with his wife, Myrtle Page Fillmore, in 1889. He became known as an American mystic for his contributions to spiritual interpretations of Biblical Scripture. Fillmore promoted vegetarianism for three decades of his life.

Unity is a spiritual organization founded by Charles and Myrtle Fillmore in 1889. It grew out of Transcendentalism and became part of the New Thought movement. Unity may be best known for its Daily Word devotional publication begun in 1924. Originally based in Christianity with emphasis on the Bible, Unity more recently has said it offers "positive, practical Christianity" and describes itself as "for people who might call themselves spiritual but not religious."