Hampshire’s home will be called the Ageas Bowl at least until 2022 thanks to a five-year extension of the sponsorship deal.
The insurer has been part of ground’s name since 2012 and now the partnership will last for a minimum of 11 years.
Ageas has also extended its brand exposure to a number of new areas, including the main logo position on Hampshire's two limited-overs shirts plus naming rights to and branding on the new media centre and large conference space in the Hilton Hotel that is part of the ground.
Hampshire regularly host international cricket and staged their first Test when England played Sri Lanka in 2011. In 2014 England will face India in an Investec Test at the Ageas Bowl.
Hampshire chairman Rod Bransgrove said: "I'd like to take this opportunity to thank Ageas for their amazing support over the past 18 months.
“With their help, we are now in the final stages of transforming the Ageas Bowl into one of the world's leading Test match venues.
“This extension of the naming rights agreement indicates our absolute satisfaction with the partnership and is a fantastic endorsement for the club and this wonderful venue.
“We are thoroughly looking forward to continuing our successful relationship with Ageas and to the fulfilment of our mutual objectives."
Chief executive of Ageas UK Andy Watson said: "Our business is based on strong, long-term partnerships and we value the bond we have formed with the Ageas Bowl team and everybody at Hampshire Cricket.
“It is a first-class sporting, conference and entertainment venue, which reflects our strong commitment to our local community whilst bringing us the national and international profile to support our growing UK insurance brand.
“We are proud to be supporting an excellent facility that can be enjoyed by individuals, families and businesses across Hampshire and beyond."