Silburn, the author of TBWA's "no nonsense" campaign for John Smith's, fills the position left vacant five months ago by David Lubars, who quit to join BBDO North America.
Silburn, who will be based at Fallon's Minneapolis headquarters, will report to Pat Fallon, the chairman of Fallon Worldwide. Fallon said: "We were struck by how similarly we look at the business and what our standards are. We want to improve every corner of our business."
Trevor Beattie, the chairman and creative director at TBWA, said: "There's only one Paul Silburn, but it's not every day we get the chance to say 'I'd like to hire more of the best people in London'."