Robert Ryan was born in Liverpool but moved to London when he was eighteen to attend university. He lectured in natural sciences for several years before moving into journalism in the mid-1980s, first with The Face and then the Dylan Jones-edited Arena. During this time, he also wrote for The Daily Telegraph, US GQ, US Conde Nast Traveler, Esquire and The Sunday Times.

Robert Ryan lives in North London with his wife and three children.