Who is the sniper with the most kills?

The sniper with the most confirmed kills is often cited as Simo Häyhä, a Finnish soldier during the Winter War (1939-1940) against the Soviet Union, with an estimated 505 confirmed kills. Häyhä earned the nickname "White Death" due to his effectiveness in snowy terrain. In modern contexts, Ukrainian sniper Vasily Zaytsev, who served in World War II, is also well-known, but Häyhä's record remains unmatched.