Patrick Kelly (c. 1822 – June 16, 1864) was an Irish-American Union Army officer during the American Civil War.

Kelly was born in Castlehacket, Tuam, Ireland, and emigrated to the United States, landing in New York City.

[1] At the outset of the Civil War, Kelly enlisted in the Union Army and saw action as captain of Company E of the 69th New York Infantry at the First Battle of Bull Run.

On September 14, 1861, he was named lieutenant colonel of the 88th New York Infantry and fought in the Irish Brigade's major battles in 1862.

At the age of 42, Kelly died during the Siege of Petersburg when he was shot through the head while leading the Irish Brigade forward against Confederate earthworks.