Adelaide senior coach Don Pyke has parted ways with the club.

The 50-year old spent four years at West Lakes after taking over from the the deceased Phil Walsh at the end of the 2015 season.

“It has been an absolute privilege and joy to coach this Club and I have loved my time here trying to achieve great things with our players for our Members and fans,” Pyke said.

“It has been a wonderful ride with some great memories and unfortunately some sad times, but now it is clear to me it is my time to move on knowing I have given my all.

“This decision has been extraordinarily difficult to reach but vital for me is the Club and playing group being able to move forward, and the health and happiness of important people in my life.”

Pyke led the Crows to the 2017 Grand Final, however, after missing out on finals in the two seasons since, has stepped away from the top job.

It comes amid the club's internal review.