The 20-year-old has put to bed any speculation that he could be seeking a return home to Melbourne at seasons end.
Miller said he was pleased to sign on with the Suns.
“In my eyes, there was no other place I wanted to be other than at the Suns,” Miller said.
“As a playing group, we have completed a mountain of work this pre-season, and strongly believe we are in for an exciting 2017.
“We believe, our time to rise is now and we want everyone on the Gold Coast to join us in 2017 to help the club write our next chapter.”
Suns List & Strategy Manager Scott Clayton welcomed Miller’s decision.
“We are rapt that Touk has re-committed to the club,” Clayton said.
“He’s been incredibly consistent since joining the club, he has matured quickly and is natural leader, continually influencing our young players in the right way.
“As a club we are incredibly excited about his future with the Gold Coast.”