Diane Keaton has never been married to anyone.

Quick answer

  • Diane Keaton has said in interviews and profiles that she never married at any point in her life.
  • She did have several famous long-term relationships (Woody Allen, Al Pacino, Warren Beatty), but none of these led to marriage.

A bit more context

  • Articles reviewing her life and love life consistently describe her as “never married,” even while detailing her major romances.
  • She later chose single motherhood, adopting two children in her 50s, and often framed remaining unmarried as a deliberate, independent life choice.

So the direct answer to “who was Diane Keaton married to” is: no one—she was never married.

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