Dangerfield has signed a one-year contract extension which will put him in sight of reaching the 400-game milestone.
A veteran of 374 AFL games, Dangerfield will turn 37 next April.
"It's exciting for us all to have Pat playing for the Cats in 2027," Geelong's football boss Andrew Mackie said on Friday.
"He continues to lead from the front and remains an important player and person within our football program.
"Pat drives high standards, cares deeply about the club and has a positive influence on everyone around him, so we're pleased to see him continue."
Dangerfield started his career at Adelaide, where he played 154 games from 2008-15.
The brilliant midfielder switched to Geelong for the 2016 season, winning the Brownlow medal in his first year at the Cats.
Dangerfield, an eight-time All Australian, featured in Geelong's 2022 premiership and is a four-time club champion - once at Adelaide and three times with the Cats.
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