William Channing may refer to:
William Ellery Channing (1780–1842), Unitarian preacher of the early nineteenth century William Ellery Channing (poet) (1818–1901), Transcendentalist poet, nephew of the preacher William Henry Channing (1810–1884), American writer and philosopher William Francis Channing (1820–1901), American activist, electrical researcher, scientist and inventor