Michelle Sosna is a recurring character on Beverly Hills, 90210. She is portrayed by Leslie Ishii.
Michelle was the mother of Janet Sosna and was married to Ben Sosna. She was generally supportive of her husband. In season 10, after Steve and Janet invited the Ben and Michelle to dinner, Ben refused to even sit down with them once he learned Janet was pregnant and they announced their impending wedding. Michelle left with him. Ben and Michelle then tried to talk Janet into moving back home, but Steve and Janet were determined to get married. When they met Steve's family, Rush Sanders and his ex-wife's girlfriend got into an argument, which caused them to leave again.
At Christmas, Steve and Janet ran into Ben and Michelle at a Christmas tree lot. Ben and Michelle both seemed to soften at the sight of their granddaughter, Madeline Sanders. Steve later confronted the Sosnas at their house. he told them that he wasn't going to let them be part of Madeline's life if they were just going to go away if they didn't like something she did, much like they did Janet. He invited them to Christmas and told them it would be their last chance. They showed up on Christmas to visit Madeline and Janet.