Hunton has been out of the industry since November last year following his departure from Lowe London, where he was the managing director. He left just six weeks after the agency announced the appointment of Amanda Walsh as the chief executive.
In his new role, he will coordinate the global Land Rover business between Y&R's two main agency hubs on the account, RKCR/Y&R in London and Y&R in Irvine California.
Hunton, who will join in March, will also oversee the direct marketing and digital aspects of the business through Wunderman and Wunderman Interactive.
James Murphy, chief executive of RKCR/Y&R, said: "There are not many more plum account handling jobs in the business than this one. It's a very big job and we needed a very big talent to fill it.
However, Chris is not just a talented operator, he’s a lovely bloke who will fit into straight into the culture at RKCR. It's a great hiring for us as I believe he was being courted by other agencies."
Land Rover's creative work regularly performs well in awards, and a recent ad starring Zara Philips attracted wide ranging media attention.
Before joining Lowe in February 2005, Hunton was the managing director and managing partner at Quiet Storm.
Prior to that, he had been out of the industry for six months following his departure from McCann Erickson London in early 2004, where he held the chief executive position.
He joined the agency in 1998 as deputy managing director and was promoted to the chief executive role by Ben Langdon, who was then the chairman and chief executive of the McCann-Erickson world group EMEA, in January 2001.
Before that he worked at Lowe, on the Smirnoff and Weetabix accounts, as well as stints at Young & Rubicam and FCB.