Austin Cowles (May 3, 1792 – January 15, 1872) was a leader and hymnwriter of the early Latter Day Saint movement. Over the course of his life, Cowles, an ardent anti-polygamist, was affiliated with Joseph Smith's Church of Christ (later the Church of Jesus Christ of Latter Day Saints), William Law's True Church of Jesus Christ of Latter Day Saints, Sidney Rigdon's Church of Christ, James Strang's Church of Jesus Christ of Latter Day Saints, James C. Brewster's Church of Christ, and Joseph Smith III's Reorganized Church of Jesus Christ of Latter Day Saints.