Krysty Wilson-Cairns is a Scottish screenwriter. Born and raised in Glasgow, she studied at the Royal Conservatoire of Scotland, and the National Film and Television School. During her teenage years, she was a runner on television series including the detective show Taggart. Her script for the unproduced science fiction thriller Aether made the 2014 Black List and led to a staff writer role on the television show Penny Dreadful. Her feature film debut was the screenplay for the Sam Mendes-directed 2019 war film 1917. She co-wrote it with Mendes and received nominations for the Academy Award for Best Original Screenplay and the Writers Guild of America Award for Best Original Screenplay.