Winchester (also known as Winchester: The House That Ghosts Built) is a 2018 supernatural horror film directed by Michael and Peter Spierig, and written by the Spierigs and Tom Vaughan. The film stars Helen Mirren as heiress Sarah Winchester, with Jason Clarke and Sarah Snook, and follows Winchester as she is haunted by spirits inside her San Jose mansion in 1906.

An American-Australian co-production, the film was released in the United States on February 2, 2018, and in Australia on February 22, 2018. The film received negative reviews from critics, who called it "dull" and "pointless”, but was a box office success, grossing $44 million worldwide against a $3.5 million budget. At the 39th Golden Raspberry Awards, the film was nominated in four categories, including Worst Picture and Worst Actress for Mirren, but did not win any of them.