Edward Terence Donnelly (August 22, 1871 – February 8, 1929) was a United States Army officer in the late 19th and early 20th centuries.

After being honorably mustered out of the volunteer service on November 3, 1898, Donnelly was commissioned as a first lieutenant in the 43rd U.S. Volunteer Infantry on August 17, 1899, though he was honorably mustered out on July 5, 1901.

[1][2] Donnelly graduated from the School of Application for Cavalry and Field Artillery in 1905.

On January 25, 1907, he was promoted to the rank of Captain, and on June 6 of that year he was transferred to the First Field Artillery.

[1][2] Donnelly married Flora Fitten Berwick on November 22, 1909.