The port, which just weeks ago reported record revenues for a fifth consecutive year, has extended its limited-overs shirt sponsorship deal with the club to 2016.
As one of the region’s major transport hubs, Port of Tyne has been associated with the county champions since 2010.
Andrew Moffat, Port of Tyne chief executive, said: “The port prides itself on developing relationships with businesses, whether as client or customer, and the agreement with Durham allows the port to continue to provide a wide range of benefits not only to businesses but just as importantly to the local community through the club’s foundation activity.
“We’re delighted to be associated with the sporting success of Durham County Cricket Club, especially as it has a strong reputation for being a business that takes its corporate responsibility seriously.”
David Harker, group chief executive of Durham County Cricket Club, added: “We have a well-established and mutually beneficial relationship with the Port of Tyne, so we are delighted to have their support for another three years.”