The actress Kimberly Hébert Gregory, who appeared in "The Big Bang Theory" among other shows, died suddenly at the age of 52 in October 2025. The exact cause of her death has not been revealed. She had a long career in TV and film and was best known recently for her role in the HBO comedy "Vice Principals".
Another notable cast member who died earlier was Carol Ann Susi, the voice of Mrs. Wolowitz on "The Big Bang Theory," who passed away from cancer in 2014 at the age of 62.
Therefore, the most recent "Big Bang Theory" actor to die is Kimberly Hébert Gregory.
