“I am utterly heartbroken. On behalf of Robin’s family, we are asking for privacy during our time of profound grief.
“As he is remembered, it is our hope the focus will not be on Robin’s death, but on the countless moments of joy and laughter he gave to millions.”
Williams was a hugely influential comic actor, who won an Oscar for Best Supporting Actor for his role in Good Will Hunting in 1998.
He was well known for his roles in Good Morning Vietnam, Dead Poets Society, The Fisher King, Mrs Doubtfire, Jumanji, One Hour Photo, and Happy Feet.
He is survived by his wife and three children.