Dennis William Hickey (September 20, 1844 - October 26, 1908) was a Union Army soldier in the American Civil War who received the U.S. military's highest decoration, the Medal of Honor.

He was awarded the Medal of Honor, for extraordinary heroism shown on June 29, 1864, while serving as a Sergeant with Company E, 2nd New York Volunteer Cavalry Regiment, at Stony Creek Bridge, Virginia.

[2] Hickey died at the age of 64, on and was buried at Saint Georges Cemetery in Newburgh, New York.

The President of the United States of America, in the name of Congress, takes pleasure in presenting the Medal of Honor to Sergeant Dennis William Hickey, United States Army, for extraordinary heroism on 29 June 1864, while serving with Company E, 2d New York Cavalry, in action at Stony Creek Bridge, Virginia.

This article about a person of the American Civil War is a stub.