For me it would be Paul Lynde.
[QUOTE=Hal Briston]
I’m thinking it’d be Paul McCartney.
[/QUOTE]
Wow, I actually always thought Hal Briston was your real name.
David Crosby
Surprisingly, this is all I can think of at the moment.
Lord help me, the only person I can think of is Sally Struthers.
There’s gotta be something better out there…
[QUOTE=Shoeless]
Lord help me, the only person I can think of is Sally Struthers.
There’s gotta be something better out there…
[/QUOTE]
Sylvester Stallone? 
[QUOTE=twickster]
Is your middle initial K? Because otherwise I’d vote no for that being a match.
[/QUOTE]
Joanne Rowling doesn’t have a middle name. The K was invented for marketing reasons.
Married Name:
Kevin Smith
Kristy Swanson
Maiden Name:
KM (I’ve got nothing)
Madd Maxx
(I’m a JB too)
[QUOTE=Nutty Bunny]
Married Name:
Kevin Smith
Kristy Swanson
Maiden Name:
KM (I’ve got nothing)
[/QUOTE]
Keith Moon
[QUOTE=Shoeless]
Lord help me, the only person I can think of is Sally Struthers.
There’s gotta be something better out there…
[/QUOTE]
Sissy Spacek, Sirhan Sirhan, Steven Seagal, Sarah Silverman…
The first that came to mind is Johannes Kepler.
Then I realized John Kennedy probably ranks higher on the name recognition. >_>
Ignoring my middle name, I come up with…
Carole King
Chuck Klein (baseball Hall of Famer)
if we’re including fictional characters, the no-brainer here is Clark Kent.
Benjamin Bratt with whom I share a first name.
[QUOTE=Inner Stickler]
Benjamin Bratt with whom I share a first name.
[/QUOTE]
Also Bobby Brown.
[QUOTE=Asimovian]
Interesting question, but I really can’t think of any famous CPs. 
Maybe someone else can help.
[/QUOTE]
Captain Planet. Or Christopher Pike.
[QUOTE=cmkeller]
Ignoring my middle name, I come up with…
Carole King
Chuck Klein (baseball Hall of Famer)
if we’re including fictional characters, the no-brainer here is Clark Kent.
[/QUOTE]
Also, Calvin Klein.
[QUOTE=delphica]
Neither of the two people I can think of who share my initials go by their full first name – both use nicknames that mess up the initials. Edward (Ted) Kennedy and Eugene (Gene) Kelly.
[/QUOTE]
Evel Knievel, as well.
[QUOTE=Chronos]
Daniel Boone is the first to come to mind. Though I suppose David Bowie is probably better known outside the US.
[/QUOTE]
David Beckham, if you’re looking for outside-US recognition.
[QUOTE=Shoeless]
Lord help me, the only person I can think of is Sally Struthers.
There’s gotta be something better out there…
[/QUOTE]
Steven Spielberg
[QUOTE=dwc1970]
David Crosby
Surprisingly, this is all I can think of at the moment.
[/QUOTE]
Dick Cheney.
[QUOTE=Antinor01]
For the name I actually use…Road Runner. I don’t know of any that share my full set of initials.
[/QUOTE]
Robert Redford
Enrico Fermi is the first person who comes to mind.
Ed White; astronaut, first American to walk in space, killed in Apollo 1 fire)
Also E. B. White; author of Charlotte’s Web and Stuart Little.
Unless someone can think of a more famous EW.
Does General Motors count?