Kristina Karo, who is trying to launch a music career - is suing Kunis, 31, for USD 5,000, claiming that the "Black Swan" actor stole her pet chicken 25 years ago in Ukraine.
Karo claims that Kunis stole the pet chicken, named Doggy, and later apologised, saying: "You can have any other chicken as a pet."
Kunis is being sued for causing "emotional distress".
However, in a video, uploaded by Kunis' husband Ashton Kutcher, the actress is seen making fun of the unusual claims.
"I was like: 'Which chicken did I steal?' I was obviously in the village when I stole these chickens so I apologised to this woman.