Knowing (stylized as KNOW1NG) is a 2009 American science fiction thriller film directed and co-produced by Alex Proyas and starring Nicolas Cage. The film, conceived and co-written by Ryne Douglas Pearson, was originally attached to a number of directors under Columbia Pictures, but it was placed in turnaround and eventually picked up by Escape Artists. Production was financially backed by Summit Entertainment. Knowing was filmed in Docklands Studios Melbourne, Australia, using various locations to represent the film's Boston-area setting. The film centers on the discovery of a strange paper filled with numbers and the possibility that they somehow predict the details of various disasters.

The film was released on March 20, 2009, in the United States. The DVD and Blu-ray media were released on July 7. Knowing grossed $186.5 million at the worldwide box office, plus $27.7 million with home video sales, against an average production budget of $50 million. It met with mixed reviews, with praise for the acting performances, visual style and atmosphere, but criticism over some implausibilities and the ending.