Tom Wolfe is an American author and journalist. He often wears a white suit and is probably best known for writing The Right Stuff and Bonfire of the Vanities.
From SFGate.com, 11/29/98: 
"I ask Wolfe if he's an atheist.
"'Well, yes,' he says. 'Getting right down to it.'"
On Jan 15, 2006 the 'CBS News Sunday Morning' show interviewed him. During the piece, the journalist's voice-over stated that he (Wolfe) "didn't believe in God."
Wolfe also attended the 2007 Atheist Alliance Convention: