Diane Keaton passed away from pneumonia on October 11, 2025, at the age of 79, with her family later confirming pneumonia as the official cause of death.

What happened

  • Multiple major outlets reported that Diane Keaton died in California on October 11, 2025, at 79 years old.
  • In the first hours after her death, only the fact of her passing was shared, with limited details about what happened medically.

Cause of death

  • Her family released a statement confirming that she “passed away from pneumonia on October 11,” which was shared through People magazine and then echoed by other news organizations.
  • Reports also noted that emergency services responded to a medical call at her home and transported her to a hospital, where her death was later confirmed.

Her final months

  • Friends and family described her health decline as sudden , saying it was “unexpected” and that she had seemed strong and full of spirit not long before.
  • Several sources mention that in her last months she was mainly surrounded by close family, with many longtime friends not fully aware of how serious her condition had become.

How people are reacting

  • Co-stars, directors, and fellow actors paid tribute to her talent and influence, calling her a “giant” of modern film and remembering her roles in films like Annie Hall and The Godfather.
  • Her family highlighted causes she cared about, especially support for unhoused people and animal welfare, and suggested donations to food banks or animal shelters as a way to honor her memory.

TL;DR: Diane Keaton died on October 11, 2025, in California at age 79, with her family confirming that pneumonia was the cause of death.