Prior was an ever-present in the home Test series against India this summer
England wicketkeeper Matt Prior has signed a new two-year deal with Sussex, tying him to Hove until the end of the 2013 season.
"It's a great honour to sign another Sussex deal," said South Africa-born Prior, 29, who is also on an England & Wales Cricket Board central contract.
"I have been at the club for 11 years now and it is very close to my heart.
"The players and management are always striving for more success, which I can hopefully be a big part of," he added.
"The support over the years from the fans and members alike has been very special."
To have the best wicketkeeper-batsman in the world committed to us for the next two years is fantastic
Sussex cricket manager Mark Robinson
Johannesburg-born, Brighton College-educated Prior, who made his first-class debut in 2001, has made 47 Test appearances for England, hitting 2,549 runs at an average of 44.71, including six centuries.
Prior has hit another 18 centuries in compiling 7,130 first-class runs in his 131 matches for Sussex.
"To have the best wicketkeeper-batsman in the world committed to us for the next two years is fantastic for the club," said Sussex cricket manager Mark Robinson.
"Matt brings a wealth of experience and desire for himself and those around him to succeed."