There are very old posts about this so instead of bringing up an old one, this is current information as of today. According to the armory, this player has the most honorable kills
http://us.battle.net/wow/en/characte...tistic#128:136
1,798,305 honorable kills
Now compare to the one that most people believe have the most at:
http://eu.battle.net/wow/en/characte...tistic#128:136
1,725,665 honorable kills