Hedley Shafto Johnstone Vicars (7 December 1826 – 22 March 1855) was a British Army officer and evangelical who was killed in action during the Crimean War.

He associated with Dr. Twining, the garrison chaplain at Halifax, became a Sunday-school teacher, visited the sick, and took every opportunity of reading the scriptures and praying with the men of his company.

At the Piraeus many men of the 97th died of cholera, and Vicars while conducting the burial parties took every opportunity of addressing the spectators at the graves.

Vicars, keeping his men in hand, fired a volley into the enemy at twenty paces, and then 'charging' with the 97th he drove the Russians back and regained possession of the trenches.

The Memorials of Captain Hedley Vicars (with a portrait and a view of his grave), by the author of 'The Victory Won,’ i.e. Catherine M. Marsh, was published soon after his death.