Olivia’s mom is Kimberly “Kim” Munn (née Schmid). As the Newsroom alum pointed out in a July 2025 Instagram post, Kim is married to her husband, Sam. Previously, Kim was married to Olivia’s father, Winston, until their divorce when Olivia was 2 years old. Kim remarried a member of the U.S. Air Force, and they divorced when Olivia was 16.

Olivia Munn has for more than a year been speaking out about the importance of a breast cancer risk assessment test that helped lead to her diagnosis in 2023, and she has now shared that that very same test also led to her mother’s breast cancer diagnosis.

Munn urged others to take the free, online risk assessment that she credits with saving her and her mother's lives.