Collingwood coach Nathan Buckley has split from his wife Tania after 18 years of marriage.

In a joint statement published in the Herald Sun, the former power couple confirmed they mutually decided to separate in January and are working together to focus on co-parenting their two sons Ayce, 12, and Jett, 14.

โ€œIt has been a tough and challenging year for every family and for ours included,โ€ the statement to the Herald Sun said.

โ€œIt is with the utmost love and respect for each other and a true commitment to our sons, that we have made a decision to separate in January.

โ€œWe remain dedicated parents and in the interests of our boys, we ask for our family to be given the privacy that is needed.โ€

โ€œWe thank everyone in advance for understanding our request and for the unconditional love and support we have received throughout our marriage.โ€

Tania also took to Instagram to confirm the split by posting a photo of the pair in happier times.