Kris' mother Debra filed for divorce from husband William in early August, TMZ reported Sunday.
The couple have three adult children: Kris and his two older sisters, Krystal and Kaela, the celebrity gossip Web site said.
William owns several Five Guys Burgers and Fries fast food restaurants throughout their home state of Minnesota, meaning there could be a debate over money in the split, TMZ said.
Meanwhile, Kris is in the process of a divorce from reality star Kim Kardashian. He is fighting the divorce on religious grounds, TMZ reported.