The team announced the 33-year-old's decision on its official website. He will walk away from the game as a two-time Super Bowl champion and a two-time Pro Bowl selection.
Miller released a statement on his decision, per the team's website:
Today, I informed the Steelers of my plans to retire. I realize how extremely fortunate and grateful I am to have spent my entire career as a Pittsburgh Steeler. I would like to thank the Rooney Family, Kevin Colbert, Bill Cowher, Mike Tomlin, James Daniel and the rest of the Steelers organization for giving me the opportunity to live out my childhood dream. I will always cherish and value the special bonds that I formed with my teammates. It was truly an honor for me to take the field with them. I am also appreciative of my entire family and all of the coaches who helped me along the way. Additionally, I want to thank Steelers Nation, the best fans in the NFL!
Lastly, I owe the biggest thank you to my wife, Katie, and our four children for their unwavering support.
Steelers head coach Mike Tomlin released a statement, per Chris Adamski of the Pittsburgh Tribune-Review:
The 2005 first-round pick out of Virginia also retires as the Steelers' all-time leader in receptions, receiving yards and receiving touchdowns among tight ends, according to NFL Network's James Palmer:
He is also among the all-time leaders in receptions among all tight ends in NFL history, per Scott Kacsmar of Football Outsiders:
Miller missed just eight games over the course of his career, appearing in 168 regular-season contests and 15 postseason matchups.
While his production was down a bit in 2015, in comparison to a 2014 season that saw him make 66 catches for 761 yards and three scores, he still ended the campaign with 60 grabs for 535 yards and two touchdowns.
'Last Chance U 'Star Getting His NFL Shot
Is 44-Year-Old T.O. Working Out for a Comeback?
Eagles Drafted a 6'8", 346-Lb Rugby Player 😳
Happy 4-Year Anniversary to the 2014 NFL WR Class
One-Handed LB Might Be Draft's Biggest Badass
Mayfield's Journey to the Draft Ends Thursday
Ball Fam Has Nothing on the St. Browns 😏
NFL Stars Spending Their Offseasons Giving Back
Derrius Guice Runs from Difficult Upbringing
Harold Landry Is Draft's Best Pure Pass-Rusher
Which Teams Are the Best Fit for Dez?
Johnny Football Is BACK!
Quavo's Mega-Celebrity Flag Football Game
Meet the NFL's Next Alshon Jeffery
Tremaine Edmunds Is NFL Draft No-Brainer
Grading the Rams' Deal with Suh
Meet the Undisputed Top CB in the NFL Draft
Grading Jordy Nelson's Deal with the Raiders
Grading the Kirk Cousins Contract
Grading the Allen Robinson Contract
Miller had one season remaining on his contract at a cap hit of just over $7 million, according to Spotrac, but he decided to pass up the $4 million in base salary he would have earned.
Per NFL Network's Ian Rapoport, that creates a win-lose situation for the Steelers:
Miller's retirement leaves Pittsburgh without a suitable replacement since the likes of Matt Spaeth and Jesse James aren't starting material.
That could compel Pittsburgh to pursue a tight end such as Vernon Davis, Ben Watson, Dwayne Allen, Coby Fleener or Ladarius Green in free agency. They may also considering selecting tight end Hunter Henry out of Arkansas in the first round of the draft.
Regardless of how the Steelers decide to address the situation, Miller will be extremely difficult to replace, and quarterback Ben Roethlisberger will be without his top safety valve in 2016.
Follow @MikeChiari on Twitter.