Goalkeeper Fraser Forster and midfielder James Ward-Prowse have signed new contracts with Southampton.
"There's real ambition around the place and it's good to be a part of it," said 28-year-old England player Forster, who has signed a five-year deal.
Ward-Prowse, 21, has agreed a six-year contract and has been with the club since he was eight years old.
"When I knew I had the chance to extend my stay here, it was a no-brainer for me," said the England Under-21 captain.
Dutch defender Virgil van Dijk agreed a new deal last week.