There are several snipers who have achieved high confirmed kill counts throughout history. However, the answer to the question of which sniper has the most kills is not straightforward, as different sources provide different answers. Here are some of the most notable snipers and their confirmed kill counts according to various sources:

• Carlos Hathcock: A United States Marine Corps sniper who is credited with 93 confirmed kills.
• Adelbert Waldron: A United States Army sniper who formerly held the record for the most confirmed kills by a US military sniper with 109 kills.
• Simo Häyhä: A Finnish sniper who served in the Winter War of 1939–1940 and is credited with 505 confirmed kills.
• Chuck Mawhinney: A United States Marine Corps sniper who holds the record for most confirmed kills by a US Marine with 103 kills, with an additional 216 "probable kills".
• Juba: A sniper who operated in Iraq and claimed to have killed over 100 American soldiers.
• Nicholas Irving: A United States Army sniper nicknamed "The Reaper" with 33 confirmed kills.

It is important to note that some of these numbers may be disputed or difficult to verify, and there may be other snipers who have achieved high kill counts but are not as well-known.