The talented actor and comedy legend was found dead at his home in Tiburon, Calif., according to the Marin County Sheriff's Office Coroner Division. He was 63.
Williams' career in Hollywood stretched decades as fans fell in love with his memorable roles in films like Mrs. Doubtfire, Dead Poets Society and Good Will Hunting.
Away from the camera, Williams was just as loved by his family, costars and famous friends.
Take a look back at the actor's biggest accomplishments both on and off screen in his life in pictures gallery.
If you or someone you know needs help, please call the National Suicide Prevention Lifeline at 1-800-273-TALK (8255).