Edgar Gilmer Dawson (March 6, 1830 – April 24, 1883) was a planter and lawyer. He was born in Greensboro, Georgia, and was one of the Greene County Dawsons, the fifth child of Senator William Crosby Dawson. In 1849 he received an A.B. from the University of Georgia and he married Lucy F. Terrell, daughter of Dr. William Terrell of Sparta, Georgia, in 1856. Dawson served as Captain and later Major of the Terrell Light Artillery from 1861 to 1864 during the Civil War. After 1867, he became a resident of Baltimore, Maryland.