The Power delists six players, including Jackson Mead, Will Lorenz, Mani Liddy, Xavier Walsh, Benny Barrett and Jacob Moss.
"We thank Jackson, Will, Mani, Benny, Jacob and Xavier for their service to Port Adelaide," list manager Jason Cripps said.
"Jackson was just the second father-son selection at the Power who will always be an important part of our history. Jackson, Will and Mani all worked hard to earn their opportunity to play AFL football during their time at Port Adelaide.
"Xavier, Benny and Jacob developed well within an AFL environment and we are grateful for what they gave to our SANFL side over the past few years.
"It's always a tough time of year when we have to say goodbye to good people. We wish all six the very best with what's next."