Stein purchased the Cornish Arms in St Merryn, a village near Padstow, in 2009 with his then-wife and business partner, Jill Stein.
The Rick Stein Group, which started with the flagship Seafood Restaurant in Padstow, now employs over 600 people and includes restaurants, a cookery school, shops and accommodation.
Ian Fitzgerald, managing director of The Rick Stein Group said in a statement: "We are deeply saddened to confirm the passing of one of our chefs on Thursday, February 13.
A “much-loved” chef who worked at Rick Stein’s restaurant The Cornish Arms has been found dead.
Police were called to a house of multiple occupancy at Grenville Road in Padstow around 8pm last Thursday out of concern for the welfare of a man inside.