Carole Jane Cadwalladr is a British author, investigative journalist and features writer. She is a features writer for The Observer and formerly worked at The Daily Telegraph. Cadwalladr rose to international prominence in 2018 for her role in exposing the Facebook–Cambridge Analytica data scandal for which she was a finalist for the 2019 Pulitzer Prize for National Reporting, alongside The New York Times reporters.

In the 2010s, personal data belonging to millions of Facebook users was collected without their consent by British consulting firm Cambridge Analytica, predominantly to be used for political advertising.