Major Hesketh Vernon Prichard, later Hesketh-Prichard DSO MC FRGS FZS was an India-born British explorer, adventurer, writer, big-game hunter, marksman, and cricketer who contributed to sniping practice within the British Army during the First World War. Concerned not only with improving the quality of marksmanship, the measures he introduced to counter the threat of German snipers were credited by a contemporary with saving the lives of over 3,500 Allied soldiers.

Hesketh-Prichard eventually gained official support for his campaign, and in August 1915, he was given permission to proceed with formalized sniper training. By November of that year, his reputation was such that he was in high demand from many units. In December, he was ordered, on General Allenby's request, to the Third Army School of Instruction and was made a general staff officer with the rank of captain. On January 1, 1916, he was mentioned in dispatches.

His friend George Gray, himself a champion shooter, told him that he had reduced sniping casualties from five a week per battalion to forty-four in three months in sixty battalions; by his reckoning, this meant that Hesketh-Prichard had saved over 3,500 lives. He was promoted to major in November 1916. By this time in the war, his contributions to sniping had been such that the former German superiority in the practice had now been reversed.