St Kilda have confirmed veteran defender Sam Gilbert will not be offered a contract for the 2019 season, after 13 years at the club.

Gilbert made his debut in Round 2, 2006, and played 208 games for the Saints, including both of the club's 2010 grand finals.

The 32-year-old played 11 games this season, and told the club's website he's proud to call himself a Saint.

“I want to thank the club for the opportunity to play at the highest level, and for helping shape the person I am today,” Gilbert told saints.com.au.

“I have been privileged to be part of the club for the past 13 years, and I’ve loved every minute of it.

“I owe a lot to my coaches, teammates, and the St Kilda staff and supporters, and thank them for their friendship and support.

“I also want to thank my family for their incredible support, in particular my wife Georgie and my new baby boy Oscar.

“I will take my time to weigh up what’s next, but I respect the club’s decision and I hope the boys can achieve something special in the future.”