David Gordon Lyon (24 May 1852 – 4 December 1935) was an American theologian. He was born in Benton, Alabama, the son of a doctor. In 1875 he received his AB from Howard College in Marion Alabama. (Howard is now Samford University and located in Birmingham, Alabama).. He studied at the Southern Baptist Theological Seminary under Crawford Howell Toy, and went to Germany, where he married Tosca Woehler (d. 1904) and received his PhD from the University of Leipzig in 1882, in the study of Syriac.