Brayshaw, who was eligible to exercise his rights as a free agent in 2022, had garnered reported interest from Geelong, Fremantle and Essendon due to his stellar form in a more defensive role in the red and blue.
This season, the 26-year-old ranks as one of the best intercept players in the AFL, having taken on a role at half-back under Simon Goodwin.
“Angus is a leader of our club and to have him commit long term is a brilliant result. His talent is obvious to all and his willingness to put the team first and play whatever role we need him to is a testament to his character, ” Melbourne List Manager Tim Lamb told Melbourne Media.
“This signing is another great endorsement for the culture we have created and we know Angus will continue to drive standards within the group.
“The versatility he has displayed across his career makes him an enormous asset to our club. The great thing is Angus still has enormous growth in his game and we are excited about what he will produce in the future.
“This deal means another key pillar of our playing group will play out his career with us which is an important part of our strategy going forward. The example that our leaders have set in committing to stay together to try to achieve something special should give our members and supporters great confidence in the direction we are taking."
Brayshaw has played 137 matches for the Demons since joining the club as the third overall selection in the 2014 National Draft.