Clarke, who is recovering from hamstring surgery, will take on the role throughout the third Commonwealth Bank Test against India, providing an unique insight into his teammates and contemporary opponents.
"It's an absolute thrill to have Michael on board, he joins a long list of Australian Test captains we've had in the Wide World of Sports commentary box," said Brad McNamara, Nine's executive producer of cricket.
Clarke is excited about the prospect of joining the commentary team for arguably the biggest event on the Australian sporting calendar.
"I'll have a very different view of the Boxing Day Test this year," he wrote in his News Ltd column.
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"Channel Nine have kindly asked me to be part of the commentary team for the match, so I'll be flying down to Melbourne on Christmas Day to join them.
"I'm not sure what to expect. It will certainly be unusual watching the boys from the booth rather than being out there with them on the field.
"I'm sure the commentary work in Melbourne will distract me from tweeting too much this time around.