Diana Budisavljević (; 15 January 1891 – 20 August 1978) was an Austrian humanitarian who led a major relief effort in Yugoslavia during World War II. From October 1941, on her initiative and involving many co-workers, she organized and provided assistance to mostly Serbian Orthodox women and children detained in the Ustaše camps in the Independent State of Croatia, a Nazi puppet state established in occupied Yugoslavia. The operation, known as "Action Diana Budisavljević", succeeded in saving around 10,000 children. Budisavljević described the course of the Action in a diary, starting with 23 October 1941 and the final entry on 7 February 1947. The diary was released in Croatian in 2003. After her story was better publicized in 2012, she received substantial posthumous recognition.