Guilford Wiley Wells (February 14, 1840 – March 21, 1909) was a Reconstruction-era U.S. Representative from Mississippi. Born in Conesus Center, New York, Wells attended the Genesee Wesleyan Seminary and College in Lima. He enlisted in the Union Army as a private in the Twenty-seventh New York Infantry May 21, 1861.He was promoted to second lieutenant in the One Hundred and Thirtieth New York Infantry in 1862 and subsequently to first lieutenant and captain in the Nineteenth New York Cavalry. He was mustered out on February 10, 1865, as a lieutenant colonel.