The reality series will return with its 25th and 26th cycles during the 2012-13 run. Jeff Probst will continue to host the show.
"I am thrilled to continue working on the longest-running reality competition show with the world's greatest adventure crew for two more seasons," said Probst in a statement.
He continued: "We are so thankful for the supportive fans who remain with us every season, and we promise to deliver another year of quality television."
In June, Probst signed a deal with CBS for a one-hour daytime talkshow starting in fall 2012.
"I'm fascinated with people," Probst said last week. "And I love adventure. I can't wait to bring these two worlds together in daytime, and the added bonus is I get to continue with Survivor in primetime."
Survivor: South Pacific airs Wednesdays at 8/7c on CBS.
> Survivor: South Pacific Episode 10 recap: 'Running the Show'
> More Survivor news, interviews and recaps