The couple got separated in 2011 after being married for six years amid rumours that Kutcher, 35, cheated on Moore, 51, reported People magazine.
"Judgement of dissolution is entered. The parties are restored to the status of single persons," reads a box marked on the LA Superior Court papers filed on November 26.
The pair were reportedly at odds over how to divide their estimated fortune of over USD 300 million.
"Ashton's been waiting for his divorce to be over for a long time. He was annoyed it took so long. It was hanging over his head," a source said.
On the day the divorce was finalised, Kunis was spotted having a bonding time with Kutcher's mother Diane in LA.