Torday died at home in Northumberland a day earlier, surrounded by his family, said publisher Weidenfeld and Nicolson. It did not provide a cause of death.
Torday launched his writing career in his late fifties, publishing "Salmon Fishing on the Yemen" in 2007, the story of a rich sheik who dreams of bringing the sport of fly-fishing to his desert country.
The novel was adapted into a 2011 film starring Ewan McGregor and Emily Blunt, with Blunt as the sheik's representative and McGregor as a cynical fisheries expert who begrudgingly accepts the challenge.
Following on the success of his first novel, Torday went on to write six more novels and two eBooks.
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Kirsty Dunseath, of Weidenfeld & Nicolson Fiction, said Torday had invented his own genre.
"He was a gentle observer of the foibles of human nature and our social behavior," she said in a statement. "He wanted to entertain, but his novels were also infused with a deep social awareness, exploring issues such as political expediency, alcoholism, mental illness, class and our national heritage."