Samuel Parkes Cadman (December 18, 1864 – July 12, 1936) was an English-born American liberal Protestant clergyman, newspaper writer, and pioneer Christian radio broadcaster of the 1920s and 1930s. He was an early advocate of ecumenism and an outspoken opponent of anti-Semitism and racial intolerance. By the time of his death in 1936, he was called "the foremost minister of Congregational faith" by the New York Times.