Of course there are many more I really like but these were the ones that made me want to play the guitar.
On the same basis:
Ritchie Blackmore, Robin Trower, Michael Schenker, Leslie West, Rick Derringer, Roy Buchanan, Jimi Hendrix, Ronnie Montrose, Alex Lifeson, Rick Medlocke (usually forget to mention him!), Randy California (and him!), Carlos Santana.
Loads more too, of course, but I think those were the "first wave" of guitar heroes for me. Most of them are still my favourites today.
Never learned to play like any of them, though....