Denis Dempsey VC (1826 – 10 January 1896) was an Irish recipient of the Victoria Cross, the highest and most prestigious award for gallantry in the face of the enemy that can be awarded to British and Commonwealth forces.

2134, Private Denis Dempsey Date of Acts of Bravery, 12th August, 1857, and 14th March, 1858

For having, at Lucknow, on the 14th March, 1858, carried a Powder Bag through a burning village, with great coolness and gallantry, for the purpose of mining a passage in rear of the enemy's position.

This he did, exposed to a very heavy fire from the enemy behind loopholed walls, and to an almost still greater danger from the sparks which flew in every direction from the blazing houses.

Private Dempsey was likewise one of those who helped to carry Ensign Erskine, of the 10th Regiment, in the retreat from Arrah, in July, 1857.