ADELAIDE veteran David Mackay has agreed to a one-year contract extension for 2019.

The 30-year-old has put pen to paper after playing his 200th game for the club in the 14-point loss to Greater Western Sydney in Canberra last Saturday night.

It will be Mackay's 13th season with the Crows, the winger/half-back flanker having been selected with the 48th overall pick in the 2006 NAB AFL Draft.

"Adelaide has been my home for a large period of my life and my family and I could not be happier," Mackay said.

"I am enjoying my footy as much as ever and the club is well placed for success going forward.

"Importantly, this playing group is united and determined and I am thrilled to be part of it."

Mackay has averaged 16.2 disposals in his 15 games this season.

He missed the round five win against Sydney with concussion, while he was sidelined for four weeks with a rib injury sustained in the round 15 victory over West Coast.

Winger Paul Seedsman, big-bodied midfielder Cam Ellis-Yolmen, small forward Lachlan Murphy and experienced duo Kyle Cheney and Andy Otten are among those yet to be re-signed for next season.