It would be difficult to name one player for me. Here's a list in no particular order of a few that I love to listen to and who inspire me to try and be a better player:
Azo Bell, Roy Smeck, John King, James Hill, Jake Shimabukuro, George Formby
and on youtube:
Ken Middleton, ukulelezaza, doogey9, wininboy, krouk, Steven Sproat, the Re-entrants, Tripping Lily, the Barnkickers & a host of others. (and I'm still finding more every day)
I've thrown a couple of band names in there as well
If you don't recognise some of the names I've listed, they're worth checking out. You might even like them as much as I do.