The 5th New York Cavalry Regiment, also known as the 5th Regiment New York Volunteer Cavalry and nicknamed the "1st Ira Harris Guards", was a cavalry regiment of the Union Army during the American Civil War. The regiment had a good fighting reputation, and had important roles in the Battle of Hanover and the Battle of the Wilderness. It was present at nearly 175 battles and skirmishes, including Gettysburg, Opequon, and Cedar Creek. A majority of its fighting was in Virginia.