Diane Keaton died at age 79 in California on October 11, 2025. Her health had "declined very suddenly" in the months leading up to her death, but the exact cause of death has not been publicly disclosed. Her family requested privacy during this difficult time. Keaton had a history of health struggles including skin cancer and bulimia, but no official confirmation links these to her death. She is survived by her two adopted children, Dexter and Duke.