Jack the Ripper is probably the most famous serial killer of all time.
Out of identified ones, I think I'd put H.H. Holmes near the top although you have some who are famous *mostly* because they're more recent and served prison time -- ie, Dahmer, Gacy, etc.
Muscles posted...
Pretty sure they meant the actual killer, not the Nick name of an unknown killer
Most serial killers are known better by a nickname rather than their actual name anyway. Does anybody remember the Green River Killer's real name? Because I don't. Ditto for the Son of Sam and the Boston Strangler.
But people remember Ted Bundys name. Ergo, he wins.