He will be joined in the leadership group by Leigh Montagna, Nick Dal Santo, Ben McEvoy, James Gwilt, David Armitage, Sean Dempster and Jarryn Geary.
“I’m honored to again be named captain of the Saints in 2013,” Riewoldt said.
"It’s an exciting period for the club and with the support of our strong leadership group, I’m looking forward to leading the team, into a successful season."
The club has instituted a leadership development program that will see Lenny Hayes, Stephen Milne, Justin Koschitzke, Sam Fisher, Adam Schneider and Jason Blake supporting the leadership group.
Members of this group will also mentor players who are part of an Emerging Leaders Group.
“We are looking for a critical mass of leaders who are committed to driving high standards," Saints coach Scott Watters said.
"We need to develop emerging leaders and so some of our most respected players will be involved in mentoring those who have been identified as possible future leaders.
Sam Fisher and Adam Schneider have elected not to remain part of the leadership group.
“I have enjoyed being part of the leadership group for the last seven years but I missed eight games through injury last season,” Fisher said.
"Over the summer, my commitment to the club was questioned in some quarters outside the club.
"While I don’t agree with it, I think the best thing for me is to concentrate on ensuring I deliver my best form."
Schneider declared he was happy for a new generation of leaders to be developed.
“It’s been great to be part of the leadership group but we need to continue to develop the next generation of quality leaders,” Schneider said.
"At the same time, I will continue to lead by my actions on the field.
St Kilda’s first intra-club match will be held at Linen House Centre, Seaford on February 9 and the club’s first NAB Cup matches are against Adelaide and Port Adelaide at AAMI Stadium on Sunday, February 17.