The Tasmania product, who made his debut with Hawthorn in 2006, has decided to hang up the boots after 16 seasons in the league.
A key member of the Hawks' successes of this century, Birchall's career ends as one filled with an illustrious history.
An All-Australian in 2012, the 33-year-old is also a Tasmanian Hall of Fame member after becoming a name from the Apple Isle to dominate the AFL.
According to multiple reports, Birchall addressed his teammates on Friday morning of his decision to hang up the boots.
Birchall joined the Lions ahead of the 2020 season, where he has since reinvigorated his career after battling a number of injury setbacks in his latter years at Hawthorn.
Across his two years with the Queensland club, Birchall played 39 games down back for coach Chris Fagan, aiding the club's promising premiership runs.
Birchall played 248 games in the brown and gold, including a key role in the 2008 and 2013-2015 premierships.